GB187271A
(en )
1922-10-10
Improvements in or relating to periscopes
AU5321A
(en )
1921-07-19
Improvements in or relating to electromagnetic apparatus
AU433921A
(en )
1922-12-12
Improvements in or relating to radio-telephonic apparatus
GB189282A
(en )
1922-11-30
Improvements in or relating to kinematograph apparatus
AU332021A
(en )
1922-05-30
Improvements in or relating to ball-cocks
AU1685920A
(en )
1921-09-21
Improvements in train-stopping apparatus
AU467621A
(en )
1921-12-19
Improvements in electo-therapeutic apparatus
GB182987A
(en )
1922-07-20
Improvements in or relating to spectacles
AU334421A
(en )
1921-10-03
Improvements in or relating to electromagnetic relays
AU1139823A
(en )
1923-07-31
Improvements in or relating to cooling apparatus
AU1451023A
(en )
1923-12-27
Improvements in or relating to cooling apparatus
AU1440820A
(en )
1920-02-18
Improvements in or relating to kinematograph apparatus
AU700922A
(en )
1922-05-24
Improvements in bottlecaps
AU171221A
(en )
1923-02-20
Improvements in earburettors
AU1263623A
(en )
1921-08-19
Improvements in heat-regenerators
GB185188A
(en )
1922-08-28
Improvements in or relating to motion-picture apparatus
AU1810320A
(en )
1921-10-11
Improvements in or relating totin-openers
GB177965A
(en )
1922-04-13
Improvements in or relating to kinematograph projection apparatus
AU70821A
(en )
1921-09-20
Improvemens in or relating to adding machines
AU419621A
(en )
1922-04-04
Improvements in or relating to furnaces
GB177789A
(en )
1923-03-15
Improvements in or relating to cinematographic apparatus
AU937322A
(en )
1922-10-21
Improvements in or relating to talking-machines or like apparatus
AU428121A
(en )
1922-07-18
Improvements in game apparatus
AU258621A
(en )
1922-03-07
Improvements in game apparatus
AU1548423A
(en )
1921-12-02
Improvements in or relating to die case equipment