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GB576972A
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Improvements in or relating to aerial photography
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GB578376A
|
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Improvements relating to sighting apparatus for guns
|
|
GB565197A
|
|
An improved masking device for use in photographic projection printing
|
|
GB563875A
|
|
Improvements relating to roll-film photographic cameras
|
|
GB559828A
|
|
Improvements relating to folding photographic cameras
|
|
GB562989A
|
|
Improvements relating to shutter release mechanisms for photographic cameras
|
|
GB554674A
|
|
Improvements in and relating to sighting devices for aerial cameras
|
|
US2325346A
|
|
Folding camera
|
|
GB548098A
|
|
Improvements in photographic focal plane shutters
|
|
GB547511A
|
|
Improvements in and relating to machines for grinding and polishing prisms
|
|
GB543789A
|
|
Improvements in or relating to folding cameras
|
|
GB544161A
|
|
Improvements in or relating to folding cameras
|
|
US2333737A
|
|
Focusing device for roll-film cameras
|
|
GB521606A
|
|
Improvements in focussing devices for roll-film cameras
|
|
GB473539A
|
|
Improvements in and relating to viewing devices especially for aircraft
|
|
GB440270A
|
|
Improvements in shutters for cinematograph projectors and camera projectors
|
|
GB436750A
|
|
Improvements in and relating to roll film cameras
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|
GB437814A
|
|
Improvements in and relating to fabric measuring machines
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|
GB426195A
|
|
Improvements in and relating to fabric measuring machines
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GB426131A
|
|
Improvements in and relating to fabric measuring machines
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