GB191310399A - Improvements in Telephones. - Google Patents

Improvements in Telephones.

Info

Publication number
GB191310399A
GB191310399A GB191310399DA GB191310399A GB 191310399 A GB191310399 A GB 191310399A GB 191310399D A GB191310399D A GB 191310399DA GB 191310399 A GB191310399 A GB 191310399A
Authority
GB
United Kingdom
Prior art keywords
film
electrode
microphonic
microphones
bears
Prior art date
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.)
Expired
Application number
Other languages
English (en)
Inventor
Andrew Plecher
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.)
Individual
Original Assignee
Individual
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 Individual filed Critical Individual
Application granted granted Critical
Publication of GB191310399A publication Critical patent/GB191310399A/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; ELECTRIC HEARING AIDS; PUBLIC ADDRESS SYSTEMS
    • H04R21/00—Variable-resistance transducers
    • H04R21/02—Microphones

Landscapes

  • Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Acoustics & Sound (AREA)
  • Signal Processing (AREA)
  • Electrostatic, Electromagnetic, Magneto- Strictive, And Variable-Resistance Transducers (AREA)
GB191310399D 1913-05-02 1913-05-02 Improvements in Telephones. Expired GB191310399A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB191310399T 1913-05-02

Publications (1)

Publication Number Publication Date
GB191310399A true GB191310399A (en) 1914-06-02

Family

ID=32644686

Family Applications (1)

Application Number Title Priority Date Filing Date
GB191310399D Expired GB191310399A (en) 1913-05-02 1913-05-02 Improvements in Telephones.

Country Status (3)

Country Link
DE (1) DE277114C (enExample)
FR (1) FR457392A (enExample)
GB (1) GB191310399A (enExample)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN111212509A (zh) * 2020-01-16 2020-05-29 吕明猷 读票机用滚轴静电消除机构

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN111212509A (zh) * 2020-01-16 2020-05-29 吕明猷 读票机用滚轴静电消除机构

Also Published As

Publication number Publication date
DE277114C (enExample)
FR457392A (fr) 1913-09-16

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