|
GB192062A
|
|
Improvements in shutters for cinematographic cameras
|
|
US1453182A
|
|
Centrifugal force governor
|
|
GB185560A
|
|
Improvements in cinematographic film feeding devices
|
|
GB191087A
|
|
Improvements in spring escapement mechanisms
|
|
GB183560A
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|
Improvements in or relating to spools for photographic or the like films
|
|
GB183559A
|
|
Improvements in or relating to spool-boxes or spool holders for photographic films
|
|
US1446929A
|
|
Hub for cinematographic and photographic films
|
