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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Gebr Junghans AG
Original Assignee
Gebr Junghans AG
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 Gebr Junghans AGfiledCriticalGebr Junghans AG
Application grantedgrantedCritical
Publication of FR818933ApublicationCriticalpatent/FR818933A/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
G03B9/00—Exposure-making shutters; Diaphragms
G03B9/08—Shutters
G03B9/10—Blade or disc rotating or pivoting about axis normal to its plane
G03B9/18—More than two members
G03B9/22—More than two members each moving in one direction to open and then in opposite direction to close, e.g. iris type
Landscapes
Physics & Mathematics
(AREA)
General Physics & Mathematics
(AREA)
FR818933D1937-03-081937-03-08Lamelle pour obturateur d'objectifs photographiques
ExpiredFR818933A
(fr)