AU116312B2
(en )
1943-01-14
Improvement in optical systems
AU394141A
(en )
1943-01-14
Improvement in optical systems
AU117518B2
(en )
1941-07-16
Improvements in or relating to optical systems
AU117519B2
(en )
1943-09-30
Improvements in or relating to optical systems
CA399055A
(en )
1941-09-02
Optical system
AU214641A
(en )
1941-07-16
Improvements in or relating to optical systems
AU214741A
(en )
1943-09-30
Improvements in or relating to optical systems
CA398505A
(en )
1941-08-05
Electro-optical system
CA396864A
(en )
1941-05-27
Electro-optical system
AU116655B2
(en )
1943-03-18
Improvements in coupling systems
AU114719B2
(en )
1942-03-05
Improvements in television systems
AU115637B2
(en )
1942-08-13
Improvements in television systems
AU115645B2
(en )
1942-08-13
Improvements in television systems
CA393900A
(en )
1941-01-14
Eye-glasses
CA393621A
(en )
1941-01-07
Polarized type optical system
AU112819B2
(en )
1941-04-10
Improvements intime-bases for use in television systems
CA401911A
(en )
1941-12-30
Lens
AU116885B2
(en )
1943-05-06
Improvements in telephone systems
AU113976B2
(en )
Improvements in telephone systems
AU116022B2
(en )
Improvements in telephone systems
AU116872B2
(en )
Improvements in telephone systems
AU116645B2
(en )
1943-03-11
Improvements in telephone systems
AU116081B2
(en )
Improvement in signal-translating systems
AU115722B2
(en )
1942-08-27
Improvements in optical systems, particularly for television
CA400661A
(en )
1941-11-11
Spectacles