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
GB15741/21A
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.)
Individual
Original Assignee
Individual
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Publication date
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Publication of GB164349ApublicationCriticalpatent/GB164349A/en
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)
Toys
(AREA)
Abstract
164,349. Davis, W. H., (Assignee of Hopkins, M. C.). June 7, 1920, [Convention date]. Drawings to Specification. Diaphragms, shape of. A large diaphragm is of conical' form and is made of paper or the like.
GB15741/21A1920-06-071921-06-07Improvements in sound-reproducing machines
ExpiredGB164349A
(en)