BE443899A - - Google Patents

Info

Publication number: BE443899A
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.)

1940-12-23

Publication of BE443899A publication Critical patent/BE443899A/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
- H04R11/00—Transducers of moving-armature or moving-core type
- H04R11/02—Loudspeakers
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
- H04R5/00—Stereophonic arrangements
- H04R5/033—Headphones for stereophonic communication
- H04R5/0335—Earpiece support, e.g. headbands or neckrests

Landscapes

Physics & Mathematics (AREA)
Electromagnetism (AREA)
Engineering & Computer Science (AREA)
Acoustics & Sound (AREA)
Signal Processing (AREA)

BE443899D 1940-12-23 BE443899A (enrdf_load_stackoverflow)

Applications Claiming Priority (1)

Application Number	Priority Date	Filing Date	Title
CH883805X		1940-12-23

Publications (1)

Publication Number	Publication Date
BE443899A true BE443899A (enrdf_load_stackoverflow)

Family

ID=4545091

Family Applications (1)

Application Number	Title	Priority Date	Filing Date
BE443899D BE443899A (enrdf_load_stackoverflow)	1940-12-23

Country Status (4)

Country	Link
BE (1)	BE443899A (enrdf_load_stackoverflow)
CH (1)	CH219812A (enrdf_load_stackoverflow)
FR (1)	FR883805A (enrdf_load_stackoverflow)
NL (1)	NL59387C (enrdf_load_stackoverflow)

0
- BE BE443899D patent/BE443899A/xx unknown
- NL NL59387D patent/NL59387C/xx active
1940
- 1940-12-23 CH CH219812D patent/CH219812A/de unknown
1941
- 1941-12-18 FR FR883805D patent/FR883805A/fr not_active Expired

Also Published As

Publication number	Publication date
FR883805A (fr)	1943-07-20
CH219812A (de)	1942-02-28
NL59387C (enrdf_load_stackoverflow)

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