FR1501224A - Sapphire rod for phonographs - Google Patents

Sapphire rod for phonographs

Info

Publication number
FR1501224A
FR1501224A FR83239A FR83239A FR1501224A FR 1501224 A FR1501224 A FR 1501224A FR 83239 A FR83239 A FR 83239A FR 83239 A FR83239 A FR 83239A FR 1501224 A FR1501224 A FR 1501224A
Authority
FR
France
Prior art keywords
phonographs
sapphire rod
sapphire
rod
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
FR83239A
Other languages
French (fr)
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.)
Plessey Co Ltd
Original Assignee
Plessey 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
Application filed by Plessey Co Ltd filed Critical Plessey Co Ltd
Application granted granted Critical
Publication of FR1501224A publication Critical patent/FR1501224A/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; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
    • H04R1/00—Details of transducers, loudspeakers or microphones
    • H04R1/16—Mounting or connecting stylus to transducer with or without damping means

Landscapes

  • Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Acoustics & Sound (AREA)
  • Signal Processing (AREA)
  • Mechanical Pencils And Projecting And Retracting Systems Therefor, And Multi-System Writing Instruments (AREA)
  • Piezo-Electric Transducers For Audible Bands (AREA)
FR83239A 1965-11-11 1966-11-10 Sapphire rod for phonographs Expired FR1501224A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB4786865A GB1159386A (en) 1965-11-11 1965-11-11 Improvements in or relating to Gramophone Transducers

Publications (1)

Publication Number Publication Date
FR1501224A true FR1501224A (en) 1967-11-10

Family

ID=10446530

Family Applications (1)

Application Number Title Priority Date Filing Date
FR83239A Expired FR1501224A (en) 1965-11-11 1966-11-10 Sapphire rod for phonographs

Country Status (4)

Country Link
DE (1) DE1547057A1 (en)
FR (1) FR1501224A (en)
GB (1) GB1159386A (en)
NL (1) NL6615423A (en)

Also Published As

Publication number Publication date
DE1547057A1 (en) 1969-10-23
GB1159386A (en) 1969-07-23
NL6615423A (en) 1967-05-12

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