GB368751A - Improvements in or relating to devices for use in the reproduction of sound - Google Patents

Improvements in or relating to devices for use in the reproduction of sound

Info

Publication number
GB368751A
GB368751A GB3648030A GB3648030A GB368751A GB 368751 A GB368751 A GB 368751A GB 3648030 A GB3648030 A GB 3648030A GB 3648030 A GB3648030 A GB 3648030A GB 368751 A GB368751 A GB 368751A
Authority
GB
United Kingdom
Prior art keywords
discs
turned
insulating
plates
pick
Prior art date
Legal status (The legal status 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 status listed.)
Expired
Application number
GB3648030A
Other languages
English (en)
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Individual
Original Assignee
Individual
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 by Individual filed Critical Individual
Priority to GB3648030A priority Critical patent/GB368751A/en
Priority to FR719856D priority patent/FR719856A/fr
Priority to BE383116D priority patent/BE383116A/xx
Publication of GB368751A publication Critical patent/GB368751A/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; ELECTRIC HEARING AIDS; PUBLIC ADDRESS SYSTEMS
    • H04R21/00—Variable-resistance transducers
    • H04R21/04—Gramophone 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)
GB3648030A 1930-12-03 1930-12-03 Improvements in or relating to devices for use in the reproduction of sound Expired GB368751A (en)

Priority Applications (3)

Application Number Priority Date Filing Date Title
GB3648030A GB368751A (en) 1930-12-03 1930-12-03 Improvements in or relating to devices for use in the reproduction of sound
FR719856D FR719856A (fr) 1930-12-03 1931-06-26 Perfectionnements à la reproduction des sons
BE383116D BE383116A (mo) 1930-12-03 1931-10-03

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB3648030A GB368751A (en) 1930-12-03 1930-12-03 Improvements in or relating to devices for use in the reproduction of sound

Publications (1)

Publication Number Publication Date
GB368751A true GB368751A (en) 1932-03-03

Family

ID=10388539

Family Applications (1)

Application Number Title Priority Date Filing Date
GB3648030A Expired GB368751A (en) 1930-12-03 1930-12-03 Improvements in or relating to devices for use in the reproduction of sound

Country Status (3)

Country Link
BE (1) BE383116A (mo)
FR (1) FR719856A (mo)
GB (1) GB368751A (mo)

Also Published As

Publication number Publication date
FR719856A (fr) 1932-02-18
BE383116A (mo) 1931-11-30

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