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.)
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.)
LOUIS JOSEPH EMMANUEL COLARDEA
Original Assignee
LOUIS JOSEPH EMMANUEL COLARDEA
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Filing date
Publication date
Application filed by LOUIS JOSEPH EMMANUEL COLARDEAfiledCriticalLOUIS JOSEPH EMMANUEL COLARDEA
Application grantedgrantedCritical
Publication of FR427308ApublicationCriticalpatent/FR427308A/en
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
G03B9/58—Means for varying duration of "open" period of shutter
Landscapes
Physics & Mathematics
(AREA)
General Physics & Mathematics
(AREA)
FR427308D1910-05-251910-05-25
Automatic device for controlling the triggering of photographic cameras
ExpiredFR427308A
(en)