FR725443A - Improvements to the film guide mechanism in sound cinematography devices - Google Patents

Improvements to the film guide mechanism in sound cinematography devices

Info

Publication number
FR725443A
FR725443A FR725443DA FR725443A FR 725443 A FR725443 A FR 725443A FR 725443D A FR725443D A FR 725443DA FR 725443 A FR725443 A FR 725443A
Authority
FR
France
Prior art keywords
cinematography
sound
devices
guide mechanism
film guide
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 FR725443A publication Critical patent/FR725443A/en
Expired legal-status Critical Current

Links

FR725443D 1930-10-31 1931-10-30 Improvements to the film guide mechanism in sound cinematography devices Expired FR725443A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US725443XA 1930-10-31 1930-10-31

Publications (1)

Publication Number Publication Date
FR725443A true FR725443A (en) 1932-05-12

Family

ID=22108277

Family Applications (1)

Application Number Title Priority Date Filing Date
FR725443D Expired FR725443A (en) 1930-10-31 1931-10-30 Improvements to the film guide mechanism in sound cinematography devices

Country Status (1)

Country Link
FR (1) FR725443A (en)

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