BE347742A - - Google Patents

Info

Publication number: BE347742A
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.)

1927-01-07

Publication of BE347742A publication Critical patent/BE347742A/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

Landscapes

Physics & Mathematics (AREA)
Electromagnetism (AREA)
Engineering & Computer Science (AREA)
Acoustics & Sound (AREA)
Signal Processing (AREA)
Electromagnets (AREA)
Magnetic Treatment Devices (AREA)

BE347742D 1927-01-07 BE347742A (enrdf_load_html_response)

Applications Claiming Priority (1)

Application Number	Priority Date	Filing Date	Title
US159552A US1782094A (en)	1927-01-07	1927-01-07	Electrical movement for loud-speakers

Publications (1)

Publication Number	Publication Date
BE347742A true BE347742A (enrdf_load_html_response)

Family

ID=22573025

Family Applications (1)

Application Number	Title	Priority Date	Filing Date
BE347742D BE347742A (enrdf_load_html_response)	1927-01-07

Country Status (5)

Country	Link
US (1)	US1782094A (enrdf_load_html_response)
BE (1)	BE347742A (enrdf_load_html_response)
DE (1)	DE500413C (enrdf_load_html_response)
FR (1)	FR646686A (enrdf_load_html_response)
GB (1)	GB283213A (enrdf_load_html_response)

0
- BE BE347742D patent/BE347742A/xx unknown
1927
- 1927-01-07 US US159552A patent/US1782094A/en not_active Expired - Lifetime
1928
- 1928-01-02 GB GB35/28A patent/GB283213A/en not_active Expired
- 1928-01-03 FR FR646686D patent/FR646686A/fr not_active Expired
- 1928-01-07 DE DEH114642D patent/DE500413C/de not_active Expired

Also Published As

Publication number	Publication date
FR646686A (fr)	1928-11-14
GB283213A (enrdf_load_html_response)	1928-09-20
US1782094A (en)	1930-11-18
DE500413C (de)	1930-06-24

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