|
US3535029A
|
|
Control for microfilm viewer drive
|
|
FR1517705A
|
|
Objective more particularly intended for electro-photographic reproduction of short duration
|
|
FR1475291A
|
|
Method and apparatus for measuring the roughness of surfaces
|
|
US3402003A
|
|
Mount for lens assembly
|
|
US3458250A
|
|
Seven-element lens system for electrophotographic reproduction of fluorescent images
|
|
US3396627A
|
|
Method and device for measuring surface roughness
|
|
US3297291A
|
|
Articulate support arm assembly for optical devices
|
|
US3436145A
|
|
Focusing lens pair combined with photocopying objective
|
|
US3202051A
|
|
Symmetrical three element lens system
|
|
FR1378689A
|
|
Optical examination instrument and optical examination system comprising this instrument
|
|
FR1378657A
|
|
Lens system
|
|
GB1040320A
|
|
Improvements in or relating to optical instruments
|
|
FR1378656A
|
|
Lens system comprising a mirror
|
|
FR1384226A
|
|
Rear lighting device or by transparency, of the light tray type
|
|
GB1005273A
|
|
Improvements in or relating to illuminating devices
|
|
FR1376852A
|
|
Optical observation instrument
|
|
GB1008952A
|
|
Improvements in or relating to lens system
|
|
FR1358795A
|
|
Advanced lens system
|
|
GB983342A
|
|
Improvements in or relating to lens systems
|
|
US3183773A
|
|
Projection pointer
|
