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.)
Expired
Application number
GB1205020A
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.)
WILLIAM ARMSTRONG HENDERSON
Original Assignee
WILLIAM ARMSTRONG HENDERSON
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 WILLIAM ARMSTRONG HENDERSONfiledCriticalWILLIAM ARMSTRONG HENDERSON
Priority to GB1205020ApriorityCriticalpatent/GB162186A/en
Publication of GB162186ApublicationCriticalpatent/GB162186A/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
G03B21/00—Projectors or projection-type viewers; Accessories therefor
Landscapes
Physics & Mathematics
(AREA)
General Physics & Mathematics
(AREA)
GB1205020A1920-04-301920-04-30Improvements in or relating to optical picture projecting apparatus
ExpiredGB162186A
(en)