NL29996C - - Google Patents

Info

Publication number
NL29996C
NL29996C NL51959A NL51959A NL29996C NL 29996 C NL29996 C NL 29996C NL 51959 A NL51959 A NL 51959A NL 51959 A NL51959 A NL 51959A NL 29996 C NL29996 C NL 29996C
Authority
NL
Netherlands
Application number
NL51959A
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
Application granted granted Critical
Publication of NL29996C publication Critical patent/NL29996C/xx

Links

Classifications

    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04RLOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
    • H04R21/00Variable-resistance transducers
    • H04R21/04Gramophone pick-ups using a stylus; Recorders using a stylus

Landscapes

  • Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Acoustics & Sound (AREA)
  • Signal Processing (AREA)
  • Electrostatic, Electromagnetic, Magneto- Strictive, And Variable-Resistance Transducers (AREA)
  • Details Of Audible-Bandwidth Transducers (AREA)
  • Piezo-Electric Or Mechanical Vibrators, Or Delay Or Filter Circuits (AREA)
NL51959A 1929-06-12 1930-06-03 NL29996C (xx)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US370448A US1757547A (en) 1929-06-12 1929-06-12 Phonograph pick-up

Publications (1)

Publication Number Publication Date
NL29996C true NL29996C (xx) 1933-06-15

Family

ID=23459707

Family Applications (1)

Application Number Title Priority Date Filing Date
NL51959A NL29996C (xx) 1929-06-12 1930-06-03

Country Status (5)

Country Link
US (1) US1757547A (xx)
DE (1) DE554450C (xx)
FR (1) FR696839A (xx)
GB (1) GB342635A (xx)
NL (1) NL29996C (xx)

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
BE475067A (xx) * 1944-11-28
US2511664A (en) * 1944-11-28 1950-06-13 Gen Electric Phonograph pickup
US2472770A (en) * 1945-11-20 1949-06-07 Sylvania Electric Prod Resistance apparatus for converting mechanical movement into electrical pulses
US2482467A (en) * 1946-05-10 1949-09-20 Westinghouse Electric Corp Phonograph pickup
US2590439A (en) * 1948-05-12 1952-03-25 Star Electronics Inc Push-pull resistance type phonograph pickup
US2680786A (en) * 1950-05-24 1954-06-08 Irving Seidman Electric phonograph
US2700089A (en) * 1950-11-28 1955-01-18 Pfanstiehl Chemical Corp Strain-sensitive transducer

Also Published As

Publication number Publication date
FR696839A (fr) 1931-01-07
US1757547A (en) 1930-05-06
DE554450C (de) 1932-07-08
GB342635A (en) 1931-02-05

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