BE345314A
(en )
1927-10-31
Manufacturing process of photographic plates and papers
FR897811A
(en )
1945-04-03
Manufacturing process of photographic papers
FR580820A
(en )
1924-11-17
Manufacturing process of collotype plates
FR640847A
(en )
1928-07-23
Manufacturing process of photographic plates
FR671984A
(en )
1929-12-20
Process for the development of diazo types
FR654989A
(en )
1929-04-12
Production process for halo-free photographic plates
FR661598A
(en )
1929-08-01
Film and manufacturing process of this film
FR682229A
(en )
1930-05-24
Manufacturing process of effect papers
FR657296A
(en )
1929-05-21
Ultra-fast development process for photographic prints
FR694543A
(en )
1930-12-04
Manufacturing process of photographic discs
FR648659A
(en )
1928-12-12
Manufacturing process of heliographs and photocopies
FR594638A
(en )
1925-09-16
Improvements in the manufacture of photographic papers
FR676317A
(en )
1930-02-21
Process for the preparation of industrial instant-effect photographic papers
FR624516A
(en )
1927-07-20
Brick and process for its manufacture
FR662604A
(en )
1929-08-09
Improvements in the manufacture of photographic films
FR608614A
(en )
1926-07-30
Photographic process giving the impression of relief
FR636175A
(en )
1928-04-03
Relief photography and cinematography process
FR642733A
(en )
1928-09-03
Plate-free photography process
FR586668A
(en )
1925-04-01
Support for handling photographic plates
FR610634A
(en )
1926-09-09
Manufacturing process for window frames and frames with direct compression round corners
FR637769A
(en )
1928-05-08
Chamber for dry development of photographic papers and other processes
FR685795A
(en )
1930-07-17
Process for the direct preparation of photographic positives
FR658161A
(en )
1929-05-31
Advanced fabrication of mica tubes and sheets
FR666805A
(en )
1929-10-07
Process for color photography and cinematography
FR834661A
(en )
1938-11-29
New photographic papers sensitized on both sides and their manufacturing process