[go: up one dir, main page]

FR563474A - Improvements to sound reproduction machines - Google Patents

Improvements to sound reproduction machines

Info

Publication number
FR563474A
FR563474A FR563474DA FR563474A FR 563474 A FR563474 A FR 563474A FR 563474D A FR563474D A FR 563474DA FR 563474 A FR563474 A FR 563474A
Authority
FR
France
Prior art keywords
sound reproduction
reproduction machines
machines
sound
reproduction
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
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.)
Parlophone Records Ltd
Original Assignee
Gramophone 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 Gramophone Co Ltd filed Critical Gramophone Co Ltd
Application granted granted Critical
Publication of FR563474A publication Critical patent/FR563474A/en
Expired legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G11—INFORMATION STORAGE
    • G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B3/00—Recording by mechanical cutting, deforming or pressing, e.g. of grooves or pits; Reproducing by mechanical sensing; Record carriers therefor
    • G11B3/44—Styli, e.g. sapphire, diamond
    • G11B3/46—Constructions or forms ; Dispositions or mountings, e.g. attachment of point to shank
FR563474D 1922-07-21 1923-03-10 Improvements to sound reproduction machines Expired FR563474A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB563474X 1922-07-21

Publications (1)

Publication Number Publication Date
FR563474A true FR563474A (en) 1923-12-06

Family

ID=10476393

Family Applications (1)

Application Number Title Priority Date Filing Date
FR563474D Expired FR563474A (en) 1922-07-21 1923-03-10 Improvements to sound reproduction machines

Country Status (1)

Country Link
FR (1) FR563474A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4010959A (en) * 1974-05-20 1977-03-08 Smith Iii Jay Sound reproducing unit

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4010959A (en) * 1974-05-20 1977-03-08 Smith Iii Jay Sound reproducing unit

Similar Documents

Publication Publication Date Title
FR563474A (en) Improvements to sound reproduction machines
FR569041A (en) Improvements to calculating machines
FR582949A (en) Improvements to sound reproducing machines
FR550288A (en) Improvements to music typewriters
FR546238A (en) Improvements to sound reproducing machines
FR522058A (en) Improvements made or relating to sound reproducing machines
FR560235A (en) Sound reproduction apparatus corresponding to sound curves
FR498354A (en) Improvements to sound reproducing machines
FR563211A (en) Improvements to sound diaphragms
FR557375A (en) Improvements to sound amplifiers
FR550846A (en) Improvements to typewriters
FR537690A (en) Improvements to portable molding machines
FR549782A (en) Improvements to sound reproduction systems
FR554089A (en) Improvements to talking machines and other sound-producing machines
FR595120A (en) Improvements to phonographic machines
FR551779A (en) Improvements to chopping machines
FR556789A (en) Improvements to grinding machines
FR531646A (en) Improvements to adding machines
FR549520A (en) Improvements to spinning disc typewriters
FR535148A (en) Improvements to briquetting machines
FR574407A (en) Improvements to sound transmitters
FR529910A (en) Improvements to molding machines
FR535893A (en) Improvements to molding machines
FR565726A (en) Improvements to festooning machines
FR557877A (en) Improvements to talking machines