FI752160A - - Google Patents

Info

Publication number
FI752160A
FI752160A FI752160A FI752160A FI752160A FI 752160 A FI752160 A FI 752160A FI 752160 A FI752160 A FI 752160A FI 752160 A FI752160 A FI 752160A FI 752160 A FI752160 A FI 752160A
Authority
FI
Finland
Application number
FI752160A
Other languages
Finnish (fi)
Inventor
Erich Mueller
Johann Seidlmeyer
Original Assignee
Siemens Ag
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
Priority claimed from DE19742439688 external-priority patent/DE2439688C2/en
Priority claimed from DE19742439720 external-priority patent/DE2439720C2/en
Application filed by Siemens Ag filed Critical Siemens Ag
Publication of FI752160A publication Critical patent/FI752160A/fi

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
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
    • H04R1/00—Details of transducers, loudspeakers or microphones
    • H04R1/44—Special adaptations for subaqueous use, e.g. for hydrophone

Landscapes

  • Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Acoustics & Sound (AREA)
  • Signal Processing (AREA)
  • Audible-Bandwidth Dynamoelectric Transducers Other Than Pickups (AREA)
FI752160A 1974-08-19 1975-07-28 FI752160A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19742439688 DE2439688C2 (en) 1974-08-19 1974-08-19 MOISTURE PROTECTIVE CHARCOAL MICROPHONE CAPSULE
DE19742439720 DE2439720C2 (en) 1974-08-19 1974-08-19 MOISTURE PROTECTED CHARCOAL MICROPHONE CAPSULE

Publications (1)

Publication Number Publication Date
FI752160A true FI752160A (en) 1976-02-20

Family

ID=25767572

Family Applications (1)

Application Number Title Priority Date Filing Date
FI752160A FI752160A (en) 1974-08-19 1975-07-28

Country Status (9)

Country Link
AR (1) AR203525A1 (en)
AT (1) AT338896B (en)
BR (1) BR7505266A (en)
CH (1) CH591197A5 (en)
FI (1) FI752160A (en)
FR (1) FR2282766A1 (en)
GB (1) GB1510870A (en)
IT (1) IT1040482B (en)
SE (1) SE409538B (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN108574917B (en) * 2018-05-28 2021-03-02 歌尔股份有限公司 Electronic device

Also Published As

Publication number Publication date
SE7509277L (en) 1976-02-20
ATA550075A (en) 1977-01-15
AR203525A1 (en) 1975-09-15
GB1510870A (en) 1978-05-17
IT1040482B (en) 1979-12-20
CH591197A5 (en) 1977-09-15
BR7505266A (en) 1976-08-03
AT338896B (en) 1977-09-26
FR2282766A1 (en) 1976-03-19
SE409538B (en) 1979-08-20

Similar Documents

Publication Publication Date Title
CH579822A5 (en)
BG22084A3 (en)
AU481101A (en)
AU481663A (en)
BG19668A1 (en)
BG19764A1 (en)
BG20660A1 (en)
BG20668A2 (en)
BG20937A1 (en)
BG20947A1 (en)
BG20994A1 (en)
BG21067A1 (en)
BG21312A1 (en)
BG21341A1 (en)
BG21690A2 (en)
BG21760A1 (en)
BG22061A3 (en)
CH579399A5 (en)
BG22667A1 (en)
BG26365A3 (en)
BG26517A4 (en)
CH1378974A4 (en)
CH1666774A4 (en)
CH532175A4 (en)
CH564999A5 (en)

Legal Events

Date Code Title Description
FA Application withdrawn

Owner name: SIEMENS AKTIENGESELLSCHAFT