NL169858B - PROCESS FOR PREPARING PURE, CRYSTALLIZED PYROPHOSPHORIC ACID. - Google Patents
PROCESS FOR PREPARING PURE, CRYSTALLIZED PYROPHOSPHORIC ACID.Info
- Publication number
- NL169858B NL169858B NLAANVRAGE7201428,A NL169858DA NL169858B NL 169858 B NL169858 B NL 169858B NL 169858D A NL169858D A NL 169858DA NL 169858 B NL169858 B NL 169858B
- Authority
- NL
- Netherlands
- Prior art keywords
- crystallized
- pyrophosphoric acid
- preparing pure
- pure
- preparing
- Prior art date
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
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)
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)
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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