GB547463A
(en )
1942-08-28
Improvements in gear-pumps
AU116159B2
(en )
1942-12-03
Improvements in photographic objectives
AU364541A
(en )
1942-12-03
Improvements in photographic objectives
AU114371B2
(en )
Improvements in inking-pads
AU114506B2
(en )
1942-01-22
Improvement in photographic lenses
AU112457B2
(en )
1941-02-13
Improvement in photographic emulsion
AU114502B2
(en )
1942-01-22
Improvements in color photography
AU99641A
(en )
1942-01-22
Improvement in photographic lenses
AU41340A
(en )
1941-02-13
Improvement in photographic emulsion
AU36141A
(en )
1942-01-22
Improvements in color photography
CA399614A
(en )
1941-09-30
Photographic film
CA393816A
(en )
1941-01-07
Photographic material
AU115961B2
(en )
1942-10-15
Improvements in photosensitive electrodes
AU115016B2
(en )
1942-04-30
Improvements in water metera
AU114230B2
(en )
1941-11-27
Improvements in loudspeakers
AU116189B2
(en )
Improvements in image reproducers
AU114255B2
(en )
1941-12-04
Improvement in projection printer
AU115427B2
(en )
1942-07-09
Improvement in projection printer
AU114196B2
(en )
1941-11-20
Improvement in projection printer
AU114669B2
(en )
1942-02-26
Improvements in footwear
AU115323B2
(en )
Improvements in gyroscopes
CA393825A
(en )
1941-01-07
Photographic layer
AU112312B2
(en )
1941-01-23
Improvements in carburettors
AU113221B2
(en )
1941-06-12
Improvements in bags
AU120550B2
(en )
1941-02-20
Improvements in parachutes