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.)
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Petra AG fuer Elektro Mechanik
Original Assignee
Petra AG fuer Elektro Mechanik
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Filing date
Publication date
Application filed by Petra AG fuer Elektro MechanikfiledCriticalPetra AG fuer Elektro Mechanik
Application grantedgrantedCritical
Publication of FR577705ApublicationCriticalpatent/FR577705A/fr
G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
G03B—APPARATUS OR ARRANGEMENTS FOR TAKING PHOTOGRAPHS OR FOR PROJECTING OR VIEWING THEM; APPARATUS OR ARRANGEMENTS EMPLOYING ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ACCESSORIES THEREFOR
G03B1/00—Film strip handling
G03B1/42—Guiding, framing, or constraining film in desired position relative to lens system
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Physics & Mathematics
(AREA)
General Physics & Mathematics
(AREA)
FR577705D1923-03-081924-02-23Embrayage automatique pour le dispositif d'entraînement du film dans les appareils cinématographiques
ExpiredFR577705A
(fr)