NL169858B - PROCESS FOR PREPARING PURE, CRYSTALLIZED PYROPHOSPHORIC ACID. - Google Patents

PROCESS FOR PREPARING PURE, CRYSTALLIZED PYROPHOSPHORIC ACID.

Info

Publication number: NL169858B
Authority: NL; Netherlands
Prior art keywords: crystallized; pyrophosphoric acid; preparing pure; pure; preparing
Prior art date: 1951-05-26

Application number

NLAANVRAGE7201428,A

Other languages

Dutch (nl)

Original Assignee

Hoechst Ag

Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)

1951-05-26

Publication of NL169858B publication Critical patent/NL169858B/en

Links

Classifications

- A—HUMAN NECESSITIES
- A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
- A47L—DOMESTIC WASHING OR CLEANING; SUCTION CLEANERS IN GENERAL
- A47L5/00—Structural features of suction cleaners
- A47L5/12—Structural features of suction cleaners with power-driven air-pumps or air-compressors, e.g. driven by motor vehicle engine vacuum
- A47L5/22—Structural features of suction cleaners with power-driven air-pumps or air-compressors, e.g. driven by motor vehicle engine vacuum with rotary fans
- A47L5/28—Suction cleaners with handles and nozzles fixed on the casings, e.g. wheeled suction cleaners with steering handle
- A47L5/30—Suction cleaners with handles and nozzles fixed on the casings, e.g. wheeled suction cleaners with steering handle with driven dust-loosening tools, e.g. rotating brushes
- A—HUMAN NECESSITIES
- A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
- A47L—DOMESTIC WASHING OR CLEANING; SUCTION CLEANERS IN GENERAL
- A47L5/00—Structural features of suction cleaners
- A47L5/12—Structural features of suction cleaners with power-driven air-pumps or air-compressors, e.g. driven by motor vehicle engine vacuum
- A47L5/22—Structural features of suction cleaners with power-driven air-pumps or air-compressors, e.g. driven by motor vehicle engine vacuum with rotary fans
- A47L5/28—Suction cleaners with handles and nozzles fixed on the casings, e.g. wheeled suction cleaners with steering handle
- A47L5/32—Suction cleaners with handles and nozzles fixed on the casings, e.g. wheeled suction cleaners with steering handle with means for connecting a hose

NLAANVRAGE7201428,A 1951-05-26 PROCESS FOR PREPARING PURE, CRYSTALLIZED PYROPHOSPHORIC ACID. NL169858B (en)

Applications Claiming Priority (1)

Application Number	Priority Date	Filing Date	Title
US228387A US2691791A (en)	1951-05-26	1951-05-26	Low height suction cleaner

Publications (1)

Publication Number	Publication Date
NL169858B true NL169858B (en)

Family

ID=22856979

Family Applications (2)

Application Number	Title	Priority Date	Filing Date
NLAANVRAGE7201428,A NL169858B (en)	1951-05-26		PROCESS FOR PREPARING PURE, CRYSTALLIZED PYROPHOSPHORIC ACID.
NL82097D NL82097C (en)	1951-05-26

Family Applications After (1)

Application Number	Title	Priority Date	Filing Date
NL82097D NL82097C (en)	1951-05-26

Country Status (6)

Country	Link
US (1)	US2691791A (en)
BE (1)	BE511655A (en)
CH (1)	CH302126A (en)
FR (1)	FR1063104A (en)
GB (1)	GB707348A (en)
NL (2)	NL82097C (en)

Families Citing this family (8)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
US2770000A (en) *	1953-09-03	1956-11-13	Hoover Co	Suction cleaner having agitator drive in air stream and unobstructed fan inlet
US2980939A (en) *	1957-11-18	1961-04-25	Whirlpool Co	Vacuum cleaner
DE1239448B (en) *	1958-08-04	1967-04-27	Andrea Giambertoni	Floor care device with built-in vacuum cleaner
US3678524A (en) *	1970-03-19	1972-07-25	Studebaker Corp	Heavy duty vacuum cleaner
US3683448A (en) *	1970-06-03	1972-08-15	Nat Union Electric Corp	Nozzle height adjusting mechanism for a suction cleaner
US3713185A (en) *	1971-03-29	1973-01-30	Singer Co	Vacuum cleaner with nozzle height adjusting mechanism
US20180263441A1 (en) *	2015-12-10	2018-09-20	Jiangsu Midea Cleaning Appliances Co., Ltd.	Floor brush assembly for upright vacuum cleaner and upright vacuum cleaner having same
WO2017096721A1 (en) *	2015-12-10	2017-06-15	江苏美的清洁电器股份有限公司	Upright vacuum cleaner

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
US1533806A (en) *	1922-11-11	1925-04-14	Hoover Co	Vacuum cleaner
US1660331A (en) *	1922-12-04	1928-02-28	Walter A Frantz	Suction cleaner
US2257555A (en) *	1937-10-20	1941-09-30	Hoover Co	Suction cleaner
US2345623A (en) *	1940-03-25	1944-04-04	Eureka Vacuum Cleaner Co	Vacuum cleaner
US2287911A (en) *	1940-04-29	1942-06-30	Hoover Co	Suction cleaner
US2517670A (en) *	1944-09-16	1950-08-08	Hoover Co	Converter attachment for suction cleaners
US2515554A (en) *	1947-07-15	1950-07-18	Freeman William Simon	Rubber bathing cap
US2540178A (en) *	1947-11-05	1951-02-06	Singer Mfg Co	Motor-driven fan unit for use in vacuum cleaners

0
- BE BE511655D patent/BE511655A/xx unknown
- NL NLAANVRAGE7201428,A patent/NL169858B/en unknown
- NL NL82097D patent/NL82097C/xx active
1951
- 1951-05-26 US US228387A patent/US2691791A/en not_active Expired - Lifetime
1952
- 1952-05-20 GB GB12761/52A patent/GB707348A/en not_active Expired
- 1952-05-26 FR FR1063104D patent/FR1063104A/en not_active Expired
- 1952-05-26 CH CH302126D patent/CH302126A/en unknown

Also Published As

Publication number	Publication date
NL82097C (en)
GB707348A (en)	1954-04-14
CH302126A (en)	1954-10-15
FR1063104A (en)	1954-04-29
US2691791A (en)	1954-10-19
BE511655A (en)

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