CH64517A
(en )
1914-04-01
Magnifying glass with holding device for photographic and similar purposes
CH75674A
(en )
1917-09-01
Stand for photographic, geodetic, astronomical and similar apparatus
FR515068A
(en )
1921-03-24
Measuring device for mirror and prism stereoscopes, especially for rÖntgen reproductions
FR487421A
(en )
1918-07-03
Planetary motion device for optical instruments
FR446969A
(en )
1912-12-19
Optical instruments for oculists
CH66348A
(en )
1914-09-01
Optical bench for projections and the like
FR462817A
(en )
1914-02-05
Device for adjusting closed light sources
FR449450A
(en )
1913-02-26
Stereoscope enlarger
FR459672A
(en )
1913-11-11
Cinematographic apparatus
FR518734A
(en )
1921-05-30
Apparatus for the automatic development of film ribbons
FR477140A
(en )
1915-09-24
Lens holders for optical instruments
FI6091A
(en )
1915-07-01
Device for measuring and ordering shape
CH58015A
(en )
1913-02-17
Display device for measuring instruments with changing measuring range
CH67610A
(en )
1914-12-16
Device for checking the accuracy of an integraph with a magnifying glass
CH77564A
(en )
1918-05-01
Light meters for photographic use
CH73903A
(en )
1916-12-16
Device on strips of picture frames for fixing the picture and glass
FR438800A
(en )
1912-05-28
Stereoscopic device with moving images
FR489691A
(en )
1919-03-01
Telephotography device
CH55761A
(en )
1912-09-02
Magnifying device
CH61291A
(en )
1913-09-16
Mirror imaging device
FR453109A
(en )
1913-05-31
Lens for optical devices
CH77424A
(en )
1918-04-16
Holding device
FR443254A
(en )
1912-09-20
Means for developing stereoscopic views with optical lanterns and cinematographs
FR461102A
(en )
1913-12-20
Reel-magazine for photographic films
FR453058A
(en )
1913-05-30
Apparatus for optical telegraphy