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Roll holding camera

G - Physics – 03 – B
Patent

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Roll-film camera with interchangeable magazines

G - Physics – 03 – B
Patent

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Roll-up screen

G - Physics – 03 – B
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Rolled microfilm printing system and method

G - Physics – 03 – B
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Roller device for a flexible sheet

G - Physics – 03 – B
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Roller uncoupling protective device in self processing camera

G - Physics – 03 – B
Patent

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Rolling loop film transport mechanism

G - Physics – 03 – B
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Rotary duplicator for printing a paper or plastic master...

G - Physics – 03 – B
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Rotary film advancement apparatus

G - Physics – 03 – B
Patent

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Rotary film strip holding apparatus

G - Physics – 03 – B
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Rotary screen for receiving optical images, particularly...

G - Physics – 03 – B
Patent

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Rotary slide tray

G - Physics – 03 – B
Patent

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Rotatably adjustable camera back

G - Physics – 03 – B
Patent

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Rotating magnet focal plane shutter

G - Physics – 03 – B
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Rotating prism for projectors

G - Physics – 03 – B
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