GR2127B
(en )
1929-01-22
PERFECTIONS IN AND IN RELATION TO COLOR PHOTOGRAPHY AND CINEMA.
ES110622A1
(en )
1929-02-01
Perfections introduced in cinematography and color photography.
ES108354A1
(en )
1928-08-16
Improvements in color photography.
ES109844A1
(en )
1928-11-16
Perfection in trichromatic photography.
ES114251A1
(en )
1929-11-16
Improvements in color photography.
ES114252A1
(en )
1929-11-16
Improvements in color photography.
GR1279B
(en )
1926-09-20
IMPROVEMENTS IN AND IN RELATION TO CINEMA MOVIE OR SIMILARITY.
ES120185A1
(en )
1930-11-16
Improvements in photography.
GR2404B
(en )
1929-08-05
PERFECTIONS IN AND IN RELATION TO SECONDARY ELECTRICAL ELEMENTS.
ES99038A1
(en )
1926-11-16
Improvements introduced in color photography or cinematography.
ES93943A1
(en )
1925-10-01
Improvements in magnetic materials.
ES95157A1
(en )
1925-12-16
Improvements in magnetic materials.
GR2548B
(en )
1929-11-26
PHOTOLEVIC ELECTRIC TUBES IN VARIOUS SHAPES AND COLORS.
ES109869A1
(en )
1928-11-16
Improvements in the procedures of photography and cinematography in colors.
FR35507E
(en )
1930-03-22
Improvements in film development
GR2097B
(en )
1929-01-04
PERFECTIONS IN ADVERTISING EMBROIDERIES AND SIMILAR.
ES106668A1
(en )
1928-05-16
Better in carburetors.
ES107918A1
(en )
1928-07-16
Improvements in the projectors.
ES83224A1
(en )
1923-04-01
Improvements in the advertising devices and the pictures or films for them.
ES107492A1
(en )
1928-07-01
Improvements in airplanes.
ES98947A1
(en )
1926-10-16
Improvement in cinematographic films.
ES108659A1
(en )
1928-12-01
Improvements in illuminated signs and similar signs.
ES115254A1
(en )
1929-11-16
Procedure to obtain the projection in colors of photographs or cinematographic films.
ES112804A1
(en )
1929-07-01
Improvements in coffins.
GR2038B
(en )
1928-11-02
IMPROVEMENTS IN AND IN RELATION TO OIL BURNER.