NL7006697A - - Google Patents

Info

Publication number
NL7006697A
NL7006697A NL7006697A NL7006697A NL7006697A NL 7006697 A NL7006697 A NL 7006697A NL 7006697 A NL7006697 A NL 7006697A NL 7006697 A NL7006697 A NL 7006697A NL 7006697 A NL7006697 A NL 7006697A
Authority
NL
Netherlands
Application number
NL7006697A
Other versions
NL157184B (nl
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 JP3683169A external-priority patent/JPS4919441B1/ja
Priority claimed from JP3683369A external-priority patent/JPS4843477B1/ja
Priority claimed from JP3683269A external-priority patent/JPS4919442B1/ja
Application filed filed Critical
Publication of NL7006697A publication Critical patent/NL7006697A/xx
Publication of NL157184B publication Critical patent/NL157184B/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
    • H04R21/04—Gramophone pick-ups using a stylus; Recorders using a stylus
    • 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

Landscapes

  • Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Acoustics & Sound (AREA)
  • Signal Processing (AREA)
  • Pressure Sensors (AREA)
  • Piezo-Electric Transducers For Audible Bands (AREA)
NL7006697.A 1969-05-09 1970-05-08 Groeftaster. NL157184B (nl)

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
JP3683169A JPS4919441B1 (enExample) 1969-05-09 1969-05-09
JP3683369A JPS4843477B1 (enExample) 1969-05-09 1969-05-09
JP3683269A JPS4919442B1 (enExample) 1969-05-09 1969-05-09
JP3683069 1969-05-09

Publications (2)

Publication Number Publication Date
NL7006697A true NL7006697A (enExample) 1970-11-11
NL157184B NL157184B (nl) 1978-06-15

Family

ID=27460323

Family Applications (1)

Application Number Title Priority Date Filing Date
NL7006697.A NL157184B (nl) 1969-05-09 1970-05-08 Groeftaster.

Country Status (5)

Country Link
US (1) US3691316A (enExample)
DE (1) DE2022252C3 (enExample)
FR (1) FR2060008B1 (enExample)
GB (1) GB1308473A (enExample)
NL (1) NL157184B (enExample)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1447391A (en) * 1972-08-17 1976-08-25 Nagamura F Grooved record playback system
DK137560B (da) 1976-06-22 1978-03-20 Ortofon Mfg As Pickup.
US5489900A (en) * 1994-06-03 1996-02-06 International Business Machines Corporation Force sensitive transducer for use in a computer keyboard

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR986662A (fr) * 1943-12-03 1951-08-03 Pick-up phonographique
GB693161A (en) * 1948-03-31 1953-06-24 Brush Dev Co Improvements in and relating to electro-mechanical transducer units
US3377439A (en) * 1958-04-03 1968-04-09 Erie Technological Prod Inc Binaural piezoelectric pickup
NL275027A (enExample) * 1961-03-09
GB1041744A (en) * 1962-05-14 1966-09-07 Emi Ltd Improvements relating to gramophone pick-ups
US3518508A (en) * 1965-12-10 1970-06-30 Matsushita Electric Industrial Co Ltd Transducer
DE1287135B (de) * 1967-06-16 1969-01-16 Telefunken Patent Elektroakustischer Wandler mit einer Schicht aus Halbleitermaterial bedeckten Membran

Also Published As

Publication number Publication date
DE2022252B2 (de) 1973-05-30
FR2060008B1 (enExample) 1975-02-21
US3691316A (en) 1972-09-12
NL157184B (nl) 1978-06-15
FR2060008A1 (enExample) 1971-06-11
DE2022252A1 (de) 1971-05-27
GB1308473A (en) 1973-02-21
DE2022252C3 (de) 1973-12-13

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Legal Events

Date Code Title Description
V1 Lapsed because of non-payment of the annual fee
NL80 Information provided on patent owner name for an already discontinued patent

Owner name: MATSUSHITA EL