CH356842A
(en )
1961-09-15
Process for the manufacture of selenium rectifiers
CH265535A
(en )
1949-12-15
Character assembly equipment for photographic reproduction and method of making the same.
GB648649A
(en )
1951-01-10
Photographic emulsions
CH262415A
(en )
1949-06-30
Crystal rectifier and process for its manufacture.
CH307649A
(en )
1955-06-15
Process for generating photographic contrasts.
FR940421A
(en )
1948-12-13
Movie pass
CH334114A
(en )
1958-11-15
Process for the manufacture of dry selenium rectifiers
AT174747B
(en )
1953-04-25
Method for the projection of lenticular films
CH321682A
(en )
1957-05-15
Process for the manufacture of selenium rectifiers
FR941430A
(en )
1949-01-11
Improvements in photographic processes
FR946203A
(en )
1949-05-27
Belt clip enhancements
FR942296A
(en )
1949-02-03
Methods and devices for the production of radiological images
GR11481B
(en )
1948-02-09
METHOD AND PROVISION FOR QUICK MAKING SOAP.
IE17941L
(en )
1947-09-30
Polyester films
CA439012A
(en )
1947-01-07
Film forming apparatus
CA439011A
(en )
1947-01-07
Film forming apparatus
CA441419A
(en )
1947-05-20
Film processing apparatus
CH313672A
(en )
1956-04-30
Process for the manufacture of selenium rectifiers
CH321676A
(en )
1957-05-15
Process for the manufacture of selenium rectifiers
AT185707B
(en )
1956-05-25
Process for making waterproof sandpaper
AU137922B2
(en )
1947-11-06
Continuous film processing apparatus
CA439162A
(en )
1947-01-14
Photographic apparatus
CA441601A
(en )
1947-05-20
Photographic apparatus
CA439014A
(en )
1947-01-07
Photographic apparatus
ES181522A1
(en )
1948-04-01
A PROCEDURE AND APPARATUS FOR THE PRODUCTION OF PLASTIC FILMS