NL68611C - - Google Patents

Info

Publication number: NL68611C
Authority: NL; Netherlands

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.)

1941-07-09

Publication of NL68611C publication Critical patent/NL68611C/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
- H04R21/00—Variable-resistance transducers
- H04R21/02—Microphones
- H04R21/023—Microphones with more than one granular chamber

Landscapes

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

NL68611D 1941-07-09 NL68611C (enrdf_load_stackoverflow)

Applications Claiming Priority (1)

Application Number	Priority Date	Filing Date	Title
US938782XA	1941-07-09	1941-07-09

Publications (1)

Publication Number	Publication Date
NL68611C true NL68611C (enrdf_load_stackoverflow)

Family

ID=22241465

Family Applications (1)

Application Number	Title	Priority Date	Filing Date
NL68611D NL68611C (enrdf_load_stackoverflow)	1941-07-09

Country Status (2)

Country	Link
FR (1)	FR938782A (enrdf_load_stackoverflow)
NL (1)	NL68611C (enrdf_load_stackoverflow)

0
- NL NL68611D patent/NL68611C/xx active
1946
- 1946-11-16 FR FR938782D patent/FR938782A/fr not_active Expired

Also Published As

Publication number	Publication date
FR938782A (fr)	1948-10-25

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