FR616148A - Conical diaphragm type loudspeaker - Google Patents

Conical diaphragm type loudspeaker

Info

Publication number: FR616148A
Authority: FR; France
Prior art keywords: diaphragm type; type loudspeaker; conical diaphragm; conical; loudspeaker
Prior art date: 1925-06-01
Legal status (The legal status 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 status listed.): Expired

Application number

Other languages

Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)

HOPKINS CORP

Original Assignee

HOPKINS CORP

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.)

1925-06-01

Filing date

1926-05-14

Publication date

1927-01-24

1926-05-14 Application filed by HOPKINS CORP filed Critical HOPKINS CORP

1927-01-24 Application granted granted Critical

1927-01-24 Publication of FR616148A publication Critical patent/FR616148A/en

Status Expired legal-status Critical Current

Classifications

- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
- H04R7/00—Diaphragms for electromechanical transducers; Cones
- H04R7/02—Diaphragms for electromechanical transducers; Cones characterised by the construction
- H04R7/12—Non-planar diaphragms or cones

Landscapes

Engineering & Computer Science (AREA)
Multimedia (AREA)
Physics & Mathematics (AREA)
Acoustics & Sound (AREA)
Signal Processing (AREA)
Diaphragms For Electromechanical Transducers (AREA)
Audible-Bandwidth Dynamoelectric Transducers Other Than Pickups (AREA)

FR616148D 1925-06-01 1926-05-14 Conical diaphragm type loudspeaker Expired FR616148A (en)

Applications Claiming Priority (1)

Application Number	Priority Date	Filing Date	Title
US34255A US1630008A (en)	1925-06-01	1925-06-01	Cone-type loud speaker

Publications (1)

Publication Number	Publication Date
FR616148A true FR616148A (en)	1927-01-24

Family

ID=21875256

Family Applications (1)

Application Number	Title	Priority Date	Filing Date
FR616148D Expired FR616148A (en)	1925-06-01	1926-05-14	Conical diaphragm type loudspeaker

Country Status (6)

Country	Link
US (1)	US1630008A (en)
BE (1)	BE334366A (en)
DE (1)	DE551526C (en)
FR (1)	FR616148A (en)
GB (2)	GB252685A (en)
NL (1)	NL21057C (en)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
US2810447A (en) *	1955-05-31	1957-10-22	Ford Motor Co	Rear seat speaker
US5418337A (en) *	1993-05-28	1995-05-23	Bose Corporation	Loudspeaker driver surrounding

0
- BE BE334366D patent/BE334366A/xx unknown
- NL NL21057D patent/NL21057C/xx active
1925
- 1925-06-01 US US34255A patent/US1630008A/en not_active Expired - Lifetime
1926
- 1926-04-13 GB GB9728/26A patent/GB252685A/en not_active Expired
- 1926-04-13 GB GB28790/26A patent/GB261426A/en not_active Expired
- 1926-05-14 FR FR616148D patent/FR616148A/en not_active Expired
- 1926-05-29 DE DEH106714D patent/DE551526C/en not_active Expired

Also Published As

Publication number	Publication date
BE334366A (en)
GB261426A (en)	1927-04-21
DE551526C (en)	1932-06-02
GB252685A (en)	1927-06-02
NL21057C (en)
US1630008A (en)	1927-05-24

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