BE500297A - - Google Patents

Info

Publication number: BE500297A
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.)

1951-10-31

Publication of BE500297A publication Critical patent/BE500297A/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
- H04R11/00—Transducers of moving-armature or moving-core type
- H04R11/06—Telephone receivers
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
- H04R1/00—Details of transducers, loudspeakers or microphones
- H04R1/20—Arrangements for obtaining desired frequency or directional characteristics
- H04R1/22—Arrangements for obtaining desired frequency or directional characteristics for obtaining desired frequency characteristic only
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
- H04R11/00—Transducers of moving-armature or moving-core type

Landscapes

Physics & Mathematics (AREA)
Engineering & Computer Science (AREA)
Acoustics & Sound (AREA)
Signal Processing (AREA)
Electromagnetism (AREA)
Health & Medical Sciences (AREA)
Otolaryngology (AREA)
Audible-Bandwidth Dynamoelectric Transducers Other Than Pickups (AREA)

BE500297D 1951-10-31 BE500297A (sv)

Applications Claiming Priority (1)

Application Number	Priority Date	Filing Date	Title
DEI4800A DE959924C (de)	1951-10-31	1951-10-31	Elektroakustischer Wandler, insbesondere Hoerkapsel in Fernsprechanlagen

Publications (1)

Publication Number	Publication Date
BE500297A true BE500297A (sv)

Family

ID=7184842

Family Applications (1)

Application Number	Title	Priority Date	Filing Date
BE500297D BE500297A (sv)	1951-10-31

Country Status (2)

Country	Link
BE (1)	BE500297A (sv)
DE (1)	DE959924C (sv)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
GB806428A (en) *	1956-03-29	1958-12-23	Sten Daniel Vigren	Improvements in or relating to polarized electromagnetic devices
NL255013A (sv) *	1959-08-21

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
DE454275C (de) *	1924-02-19	1928-01-03	Neufeldt & Kuhnke Betr Sgesell	Lautsprechendes Telephon mit einem besonderen, mit der Membranmitte gekuppelten Anker
US1814798A (en) *	1929-03-14	1931-07-14	Gen Electric	Apparatus for producing sound
GB396990A (en) *	1932-12-06	1933-08-17	John Henry Walter Lewis	Improvements in loud speakers and other apparatus for interconverting electrical andacoustic vibrations
BE476263A (sv) *	1946-06-21

0
- BE BE500297D patent/BE500297A/xx unknown
1951
- 1951-10-31 DE DEI4800A patent/DE959924C/de not_active Expired

Also Published As

Publication number	Publication date
DE959924C (de)	1957-03-14

Publication	Publication Date	Title
AT175432B (sv)
AT190786B (sv)	1957-07-25
JPS297333B1 (sv)	1954-11-09
FR980038A (sv)	1951-05-07
FR65727E (sv)	1956-03-12
AT195616B (sv)	1958-02-25
AT197970B (sv)	1958-05-27
AT192177A (sv)	1957-10-10
IT500212A (sv)
BE500995A (sv)
BE500297A (sv)
BE466790A (sv)
BE477312A (sv)
BE480026A (sv)
BE491015A (sv)
BE491096A (sv)
BE494945A (sv)
BE498467A (sv)
BE498982A (sv)
BE500588A (sv)
BE500688A (sv)
BE500744A (sv)
BE500745A (sv)
BE500841A (sv)
BE16335A (sv)