AU495831A
(en )
1932-11-24
Improvements in or relating to electrical amplifier tubes
AU382431A
(en )
1932-09-08
Improvements in or relating to thermionic amplifiers
AU584732A
(en )
1933-02-02
Improvements in or relating to thermionic amplifiers
AU987832A
(en )
1933-11-02
Improvements in or relating to thermionic amplifiers
AU1015732A
(en )
1934-03-01
Improvements in or relating to thermionic values
AU950932A
(en )
1933-10-12
Improvements in or relating to electrical condensers
CA321695A
(en )
1932-04-19
Electrical amplifier
AU949732A
(en )
1933-09-07
Improvements in or relating to electric discharge tubes
AU928132A
(en )
1933-12-07
Improvements in or relating to electric discharge tubes
AU653132A
(en )
1933-03-23
Improvements in or relating to microphones
AU1508033A
(en )
1934-11-15
Improvements in or relating to thermionic amplifiers
AU1111933A
(en )
1934-02-03
Improvements in or relating to thermionic amplifiers
AU1076533A
(en )
1934-01-18
Improvements in or relating to thermionic amplifiers
AU1535433A
(en )
1934-12-13
Improvements in or relating to thermionic amplifiers
AU730532A
(en )
1933-05-18
Improvements in or relating to electron discharge device amplifiers
AU67431A
(en )
1931-11-26
Improvements in or relating to thermionic amplifiers
AU566832A
(en )
1933-01-19
Improvements in or relating to light amplifiers
AU455731A
(en )
1932-10-27
Improvements in or relating to electrical coils
AU100460B2
(en )
1937-03-18
Improvements in or relating to electron-image tubes
CA335471A
(en )
1933-09-05
Regenerative amplifier
AU936232A
(en )
1933-07-20
Improvements in or relating to wire-straightening apparatus
CA322922A
(en )
1932-05-31
Amplifier
CA327439A
(en )
1932-11-08
Amplifier
CA326620A
(en )
1932-10-04
Amplifier
CA321846A
(en )
1932-04-26
Amplifier