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US2510965A
|
|
Manually operated photofluorographic camera
|
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US2495708A
|
|
Electrically controlled flicker fusion testing apparatus
|
|
US2141176A
|
|
Loose sheet camera
|
|
US2115014A
|
|
Reading machine indexing mechanism
|
|
US2113580A
|
|
Adjustable film gate
|
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US2163593A
|
|
Reading machine
|
|
US2099682A
|
|
Page finder
|
|
US2098955A
|
|
Film editing device
|
|
US2177638A
|
|
Reading machine
|
|
US2133978A
|
|
Copying apparatus
|
|
US2131039A
|
|
Fine grain translucent screen
|
|
US2123882A
|
|
Reading attachment for microscopes
|
|
US2128921A
|
|
Processing photographic sensitized material
|
|
US2125895A
|
|
Book support
|
|
US2128920A
|
|
Book support
|
|
US2125285A
|
|
Processing film holder
|
|
US2132405A
|
|
Fine grain translucent screen
|
|
US2113578A
|
|
Reading machine
|
|
US2106726A
|
|
Film spool and container
|
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US2105475A
|
|
Camera shutter
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