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Optique et Precision de Levallois SA
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Optique et Precision de Levallois SA
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Application filed by Optique et Precision de Levallois SAfiledCriticalOptique et Precision de Levallois SA
Application grantedgrantedCritical
Publication of FR726507ApublicationCriticalpatent/FR726507A/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
G03B1/02—Moving film strip by pull on end thereof
G03B1/04—Pull exerted by take-up spool
G03B1/10—Pull exerted by take-up spool rotated by knob through gearing
Landscapes
Physics & Mathematics
(AREA)
General Physics & Mathematics
(AREA)
FR726507D1930-11-271930-11-27Perfectionnements apportés aux mécanismes pour appareils photographiques
ExpiredFR726507A
(fr)