BE807626A - CARBON MICROPHONE - Google Patents

CARBON MICROPHONE

Info

Publication number
BE807626A
BE807626A BE2053233A BE2053233A BE807626A BE 807626 A BE807626 A BE 807626A BE 2053233 A BE2053233 A BE 2053233A BE 2053233 A BE2053233 A BE 2053233A BE 807626 A BE807626 A BE 807626A
Authority
BE
Belgium
Prior art keywords
carbon microphone
microphone
carbon
Prior art date
Application number
BE2053233A
Other languages
Dutch (nl)
Inventor
W D Cragg
A N Lawson
H F Sterling
Original Assignee
Int Standard Electric Corp
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.)
Filing date
Publication date
Application filed by Int Standard Electric Corp filed Critical Int Standard Electric Corp
Publication of BE807626A publication Critical patent/BE807626A/en

Links

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
    • H04R21/021—Microphones with granular resistance material

Landscapes

  • Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Acoustics & Sound (AREA)
  • Signal Processing (AREA)
  • Lubricants (AREA)
  • Compositions Of Macromolecular Compounds (AREA)
  • Carbon And Carbon Compounds (AREA)
  • Telephone Set Structure (AREA)
  • Diaphragms For Electromechanical Transducers (AREA)
BE2053233A 1972-11-24 1973-11-22 CARBON MICROPHONE BE807626A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB5431472A GB1360559A (en) 1972-11-24 1972-11-24 Carbon microphone

Publications (1)

Publication Number Publication Date
BE807626A true BE807626A (en) 1974-05-22

Family

ID=10470609

Family Applications (1)

Application Number Title Priority Date Filing Date
BE2053233A BE807626A (en) 1972-11-24 1973-11-22 CARBON MICROPHONE

Country Status (15)

Country Link
US (1) US3859478A (en)
JP (1) JPS4984430A (en)
AR (1) AR199010A1 (en)
AT (1) ATA982873A (en)
AU (1) AU6192973A (en)
BE (1) BE807626A (en)
BR (1) BR7308746D0 (en)
CA (1) CA995349A (en)
CH (1) CH558626A (en)
DE (1) DE2358243A1 (en)
ES (1) ES420820A1 (en)
FR (1) FR2208266B3 (en)
GB (1) GB1360559A (en)
IT (1) IT1001915B (en)
NL (1) NL7315631A (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5541570A (en) * 1994-12-09 1996-07-30 Force Imaging Technologies, Inc. Force sensing ink, method of making same and improved force sensor

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US486244A (en) * 1892-11-15 Charles clamond
US919908A (en) * 1908-07-13 1909-04-27 Harold Sheen Martin Electrical-resistance device.
US1086726A (en) * 1909-03-11 1914-02-10 Johan Burchardt Opsahl Resistance unit.

Also Published As

Publication number Publication date
DE2358243A1 (en) 1974-05-30
ATA982873A (en) 1976-05-15
NL7315631A (en) 1974-05-28
ES420820A1 (en) 1976-04-01
JPS4984430A (en) 1974-08-14
FR2208266A1 (en) 1974-06-21
US3859478A (en) 1975-01-07
AR199010A1 (en) 1974-07-31
CA995349A (en) 1976-08-17
IT1001915B (en) 1976-04-30
BR7308746D0 (en) 1974-08-22
GB1360559A (en) 1974-07-17
FR2208266B3 (en) 1976-10-08
CH558626A (en) 1975-01-31
AU6192973A (en) 1975-05-01

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