FR2208266A1 - - Google Patents

Info

Publication number
FR2208266A1
FR2208266A1 FR7341721A FR7341721A FR2208266A1 FR 2208266 A1 FR2208266 A1 FR 2208266A1 FR 7341721 A FR7341721 A FR 7341721A FR 7341721 A FR7341721 A FR 7341721A FR 2208266 A1 FR2208266 A1 FR 2208266A1
Authority
FR
France
Legal status (The legal status 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 status listed.)
Granted
Application number
FR7341721A
Other languages
French (fr)
Other versions
FR2208266B3 (ja
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
International Standard Electric Corp
Original Assignee
International 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 International Standard Electric Corp filed Critical International Standard Electric Corp
Publication of FR2208266A1 publication Critical patent/FR2208266A1/fr
Application granted granted Critical
Publication of FR2208266B3 publication Critical patent/FR2208266B3/fr
Expired legal-status Critical Current

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)
  • Diaphragms For Electromechanical Transducers (AREA)
  • Telephone Set Structure (AREA)
  • Compositions Of Macromolecular Compounds (AREA)
  • Carbon And Carbon Compounds (AREA)
FR7341721A 1972-11-24 1973-11-23 Expired FR2208266B3 (ja)

Applications Claiming Priority (1)

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

Publications (2)

Publication Number Publication Date
FR2208266A1 true FR2208266A1 (ja) 1974-06-21
FR2208266B3 FR2208266B3 (ja) 1976-10-08

Family

ID=10470609

Family Applications (1)

Application Number Title Priority Date Filing Date
FR7341721A Expired FR2208266B3 (ja) 1972-11-24 1973-11-23

Country Status (15)

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

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
IT1001915B (it) 1976-04-30
FR2208266B3 (ja) 1976-10-08
BR7308746D0 (pt) 1974-08-22
DE2358243A1 (de) 1974-05-30
GB1360559A (en) 1974-07-17
CH558626A (de) 1975-01-31
US3859478A (en) 1975-01-07
NL7315631A (ja) 1974-05-28
ATA982873A (de) 1976-05-15
AR199010A1 (es) 1974-07-31
BE807626A (nl) 1974-05-22
CA995349A (en) 1976-08-17
JPS4984430A (ja) 1974-08-14
ES420820A1 (es) 1976-04-01
AU6192973A (en) 1975-05-01

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Legal Events

Date Code Title Description
ST Notification of lapse