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.)
EDWARD ARDWAY RUPERT
JOHN T DRUMM
Original Assignee
EDWARD ARDWAY RUPERT
JOHN T DRUMM
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 EDWARD ARDWAY RUPERT, JOHN T DRUMMfiledCriticalEDWARD ARDWAY RUPERT
Application grantedgrantedCritical
Publication of FR479629ApublicationCriticalpatent/FR479629A/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
G03B21/00—Projectors or projection-type viewers; Accessories therefor
G03B21/54—Accessories
G03B21/64—Means for mounting individual pictures to be projected, e.g. frame for transparency
Landscapes
Physics & Mathematics
(AREA)
General Physics & Mathematics
(AREA)
FR479629D1915-08-311915-08-31Boite à films
ExpiredFR479629A
(fr)