BE500323A
(en )
1951-01-15
A method of producing photographic color images
GB647617A
(en )
1950-12-20
Diazotype photoprinting materials
FR968132A
(en )
1950-11-20
Photographic developers
CH340812A
(en )
1959-09-15
Process for the preparation of haloalkanes
AT162402B
(en )
1949-02-25
Process for avoiding the decline of the latent image of photographic layers in the latency period
GB643063A
(en )
1950-09-15
Diazotype photoprinting materials
FR988635A
(en )
1951-08-29
Diazotype materials for photo-printing
FR966219A
(en )
1950-10-04
Sensitized diazotype materials
FR976355A
(en )
1951-03-16
Improvements to diazotype photosensitive materials
FR973438A
(en )
1951-02-09
Photographic developers
AT162401B
(en )
1949-02-25
Process for the regeneration of photographic layers by erasing the latent image
FR945465A
(en )
1949-05-05
Improvements to photographic copies
CH351496A
(en )
1961-01-15
Process for the preparation of highly sensitive photographic materials
CH320780A
(en )
1957-04-15
Process for the improvement of whiteness in color photographic images
FR928215A
(en )
1947-11-21
Universal apparatus for photographic and similar reproductions and projections
FR949871A
(en )
1949-09-12
Process for making photographic images
FR1003354A
(en )
1952-03-17
Apparatus for drying photographic film
FR980391A
(en )
1951-05-11
Apparatus for drying photographic film
FR982384A
(en )
1951-06-11
Process for the development of light-sensitive layers used in diazotype
GB648705A
(en )
1951-01-10
Improvements in or relating to photographic projection copying apparatus
BE467253A
(en )
1946-09-30
Process for the production of images according to the diazotype
GB647620A
(en )
1950-12-20
Sensitizing composition for diazotype photoprinting materials
AT174995B
(en )
1953-05-26
Process for the production of color photographic X-ray images
FR970565A
(en )
1951-01-05
Color photography process
GB643411A
(en )
1950-09-20
Improvements in or relating to photographic developers