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.)
GAETAN JOSEPH FORTUNE MARIE MA
Original Assignee
GAETAN JOSEPH FORTUNE MARIE MA
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 GAETAN JOSEPH FORTUNE MARIE MAfiledCriticalGAETAN JOSEPH FORTUNE MARIE MA
Application grantedgrantedCritical
Publication of FR5268EpublicationCriticalpatent/FR5268E/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
G03B9/28—Roller blind or flexible plate
G03B9/32—Double blind
G03B9/34—Double blind with adjustable slot; with mechanism controlling relative movement of blinds to form slot
Landscapes
Physics & Mathematics
(AREA)
General Physics & Mathematics
(AREA)
FR5268D1900-10-151905-09-28Système perfectionné d'obturateur à double rideau ne démasquant pas l'objectif
ExpiredFR5268E
(fr)