ES123179A1 - Improvements in sound film projection apparatus. - Google Patents

Improvements in sound film projection apparatus.

Info

Publication number
ES123179A1
ES123179A1 ES123179A ES123179A ES123179A1 ES 123179 A1 ES123179 A1 ES 123179A1 ES 123179 A ES123179 A ES 123179A ES 123179 A ES123179 A ES 123179A ES 123179 A1 ES123179 A1 ES 123179A1
Authority
ES
Spain
Prior art keywords
projection apparatus
sound film
film projection
sound
projection
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
ES123179A
Other languages
Spanish (es)
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
Priority to ES123179A priority Critical patent/ES123179A1/en
Publication of ES123179A1 publication Critical patent/ES123179A1/en
Expired legal-status Critical Current

Links

ES123179A 1931-05-28 1931-05-28 Improvements in sound film projection apparatus. Expired ES123179A1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
ES123179A ES123179A1 (en) 1931-05-28 1931-05-28 Improvements in sound film projection apparatus.

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
ES123179A ES123179A1 (en) 1931-05-28 1931-05-28 Improvements in sound film projection apparatus.

Publications (1)

Publication Number Publication Date
ES123179A1 true ES123179A1 (en) 1931-07-01

Family

ID=65581243

Family Applications (1)

Application Number Title Priority Date Filing Date
ES123179A Expired ES123179A1 (en) 1931-05-28 1931-05-28 Improvements in sound film projection apparatus.

Country Status (1)

Country Link
ES (1) ES123179A1 (en)

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