BE332450A - - Google Patents

Info

Publication number: BE332450A
Authority: BE; Belgium

Application number

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.)

1925-03-12

Publication of BE332450A publication Critical patent/BE332450A/xx

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)
Audible-Bandwidth Dynamoelectric Transducers Other Than Pickups (AREA)
Telephone Set Structure (AREA)

BE332450D 1925-03-12 BE332450A (ja)

Applications Claiming Priority (1)

Application Number	Priority Date	Filing Date	Title
FR249062X		1925-03-12

Publications (1)

Publication Number	Publication Date
BE332450A true BE332450A (ja)

Family

ID=8883909

Family Applications (1)

Application Number	Title	Priority Date	Filing Date
BE332450D BE332450A (ja)	1925-03-12

Country Status (3)

Country	Link
BE (1)	BE332450A (ja)
DE (1)	DE441058C (ja)
GB (1)	GB249062A (ja)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
US3032138A (en) *	1957-11-25	1962-05-01	Hawley Products Co	Acoustical devices
JP6364900B2 (ja) *	2013-09-12	2018-08-01	株式会社リコー	エネルギー変換装置及びスピーカー構造

0
- BE BE332450D patent/BE332450A/xx unknown
1925
- 1925-05-08 GB GB12042/25A patent/GB249062A/en not_active Expired
- 1925-05-09 DE DEH101824D patent/DE441058C/de not_active Expired

Also Published As

Publication number	Publication date
GB249062A (en)	1926-04-15
DE441058C (de)	1927-02-25

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