FR661005A - Improvements to phonographs and similar devices - Google Patents

Improvements to phonographs and similar devices

Info

Publication number
FR661005A
FR661005A FR661005DA FR661005A FR 661005 A FR661005 A FR 661005A FR 661005D A FR661005D A FR 661005DA FR 661005 A FR661005 A FR 661005A
Authority
FR
France
Prior art keywords
phonographs
similar devices
similar
devices
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.)
Electrical Research Products Inc
Original Assignee
Electrical Research Products Inc
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 Electrical Research Products Inc filed Critical Electrical Research Products Inc
Application granted granted Critical
Publication of FR661005A publication Critical patent/FR661005A/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
    • G11B17/00—Guiding record carriers not specifically of filamentary or web form, or of supports therefor
FR661005D 1928-04-04 1928-09-24 Improvements to phonographs and similar devices Expired FR661005A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB661005X 1928-04-04

Publications (1)

Publication Number Publication Date
FR661005A true FR661005A (en) 1929-07-19

Family

ID=10490911

Family Applications (1)

Application Number Title Priority Date Filing Date
FR661005D Expired FR661005A (en) 1928-04-04 1928-09-24 Improvements to phonographs and similar devices

Country Status (1)

Country Link
FR (1) FR661005A (en)

Similar Documents

Publication Publication Date Title
FR669581A (en) Improvements to acoustic devices
FR661005A (en) Improvements to phonographs and similar devices
FR670903A (en) Improvements to gimbal devices
FR643016A (en) Improvements to galvano-cauteries and analogues
FR618941A (en) Improvements to calorimeters and metering-metering devices used with them
FR676502A (en) Improvements to phonographs and similar reproducers
FR673995A (en) Improvements to speakers and similar devices
FR683341A (en) Improvements to odometers and similar recording devices
FR618593A (en) Improvements to fans and similar devices
FR684418A (en) Improvements to gramophones
FR684050A (en) Improvements to fans and similar devices
FR650366A (en) Improvements to magnetos and similar devices
FR696555A (en) Improvements to economizers and similar devices
FR665237A (en) Improvements to acoustic devices
FR676186A (en) Improvements to anti-glare devices
FR684179A (en) Improvements to autoluminous reading devices
FR716534A (en) Improvements to acoustic devices
FR677475A (en) Improvements to microphones and similar devices
FR657125A (en) Improvements to sound reproducing and similar devices
FR608869A (en) Improvements to dynamotors and similar devices
FR717335A (en) Improvements to plansichters and similar devices
FR655666A (en) Improvements to loudspeakers and analog devices
FR684592A (en) Improvements to radio-telegraph and analog transmitters
FR666098A (en) Improvements to phonographs
FR672647A (en) Improvements to phonographs