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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RICHARD BENTZIN
Original Assignee
RICHARD BENTZIN
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Filing date
Publication date
Application filed by RICHARD BENTZINfiledCriticalRICHARD BENTZIN
Application grantedgrantedCritical
Publication of FR333441ApublicationCriticalpatent/FR333441A/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)
FR333441D1903-05-251903-06-29Obturateur de plaque pour chambre photographique
ExpiredFR333441A
(fr)