NL7217126A - - Google Patents

Info

Publication number
NL7217126A
NL7217126A NL7217126A NL7217126A NL7217126A NL 7217126 A NL7217126 A NL 7217126A NL 7217126 A NL7217126 A NL 7217126A NL 7217126 A NL7217126 A NL 7217126A NL 7217126 A NL7217126 A NL 7217126A
Authority
NL
Netherlands
Application number
NL7217126A
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 filed Critical
Priority to NL7217126A priority Critical patent/NL7217126A/xx
Priority to GB5801673A priority patent/GB1421358A/en
Priority to BE2053288A priority patent/BE808608A/xx
Publication of NL7217126A publication Critical patent/NL7217126A/xx

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)
  • Electrostatic, Electromagnetic, Magneto- Strictive, And Variable-Resistance Transducers (AREA)
NL7217126A 1972-12-15 1972-12-15 NL7217126A (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html)

Priority Applications (3)

Application Number Priority Date Filing Date Title
NL7217126A NL7217126A (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html) 1972-12-15 1972-12-15
GB5801673A GB1421358A (en) 1972-12-15 1973-12-14 Electric transducer
BE2053288A BE808608A (nl) 1972-12-15 1973-12-14 Electrische omzetter

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
NL7217126A NL7217126A (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html) 1972-12-15 1972-12-15

Publications (1)

Publication Number Publication Date
NL7217126A true NL7217126A (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html) 1974-06-18

Family

ID=19817563

Family Applications (1)

Application Number Title Priority Date Filing Date
NL7217126A NL7217126A (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html) 1972-12-15 1972-12-15

Country Status (3)

Country Link
BE (1) BE808608A (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html)
GB (1) GB1421358A (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html)
NL (1) NL7217126A (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html)

Also Published As

Publication number Publication date
BE808608A (nl) 1974-06-14
GB1421358A (en) 1976-01-14

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Legal Events

Date Code Title Description
BV The patent application has lapsed