NL157184B - Groeftaster. - Google Patents

Groeftaster.

Info

Publication number
NL157184B
NL157184B NL7006697.A NL7006697A NL157184B NL 157184 B NL157184 B NL 157184B NL 7006697 A NL7006697 A NL 7006697A NL 157184 B NL157184 B NL 157184B
Authority
NL
Netherlands
Prior art keywords
taster
groove
groove taster
Prior art date
Application number
NL7006697.A
Other languages
English (en)
Dutch (nl)
Other versions
NL7006697A (enExample
Original Assignee
Matsushita Electric Industrial Co Ltd
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 by Matsushita Electric Industrial Co Ltd filed Critical Matsushita Electric Industrial Co Ltd
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 NL7006697A (enExample) 1970-11-11
NL157184B true 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
NL7006697A (enExample) 1970-11-11
FR2060008B1 (enExample) 1975-02-21
US3691316A (en) 1972-09-12
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