CH278309A
(en )
1951-10-15
Process for the direct production of positive photographic images.
FR1015464A
(en )
1952-10-13
Plasters
CH282375A
(en )
1952-04-30
Process for the preparation of organohalosilanes.
AT176751B
(en )
1953-11-25
Exposure device for the production of photographic contact copies
FR984057A
(en )
1951-07-02
Photographic reproduction apparatus
CH275795A
(en )
1951-06-15
Process for the preparation of organohalosilanes.
CH293149A
(en )
1953-09-15
Photosensitive material for the photomechanical production of printing forms.
FR981119A
(en )
1951-05-22
Cinematographic apparatus
AT170800B
(en )
1952-03-25
Photographic apparatus for making enlargements or contact copies
CH333207A
(en )
1958-10-15
Photosensitive mixture for the production of diazotype materials
FR994547A
(en )
1951-11-19
Projector fronto-focometer
AT169773B
(en )
1951-12-27
Exposure apparatus for making contact copies
AT167821B
(en )
1951-03-10
Device for setting the photographic exposure factors
CH300050A
(en )
1954-07-15
Process and device for the production of image enlargements.
AT177833B
(en )
1954-03-10
Device for the production of contact pins
CH292314A
(en )
1953-07-31
Photographic lens.
AT174995B
(en )
1953-05-26
Process for the production of color photographic X-ray images
FR984542A
(en )
1951-07-06
Photographic reproduction apparatus
AT194709B
(en )
1958-01-10
Process for the preparation of photographic light-sensitive material
AT168437B
(en )
1951-06-11
Flat boat
ES188710A1
(en )
1949-09-01
PROCEDURE FOR THE MANUFACTURE OF RUBBER STAMPS OR STAMPS
FR1026116A
(en )
1953-04-23
Diaper
FR1027938A
(en )
1953-05-18
Carburetor
CH247248A
(en )
1947-02-28
Device for the production of reflex photocopies.
FR1022185A
(en )
1953-03-02
Advanced contact copy camera