|
GB627342A
|
|
Improvements in or relating to current-stabilising circuits
|
|
GB634504A
|
|
Improvements in or relating to magnetic cores for use at high frequencies
|
|
GB647055A
|
|
Improvements in or relating to amplifying circuits
|
|
GB628277A
|
|
Improvements in or relating to electric fittings comprising a lampholder combined with a suspension tube
|
|
GB627407A
|
|
Improvements in or relating to transceivers
|
|
GB614748A
|
|
Improvements in or relating to devices for the oscillographic indication or recording of electrical or mechanical processes
|
|
GB625823A
|
|
Improvements in or relating to the reproduction of sound track records cut into a carrier
|
|
GB603632A
|
|
Improvements in or relating to housings for electric apparatus filled with viscous insulating materials
|
|
GB617187A
|
|
Improvements in electric discharge tubes and circuit arrangements therefor
|
|
GB579404A
|
|
Improvements in or relating to the manufacture of ceramic materials of high permittivity
|
|
GB523144A
|
|
Improvements in or relating to x-ray installations comprising a grid-controlled switching tube
|
|
CA415810A
|
|
Metal precipitating apparatus
|
|
CA484366A
|
|
Frequency determining circuits
|
|
CA508843A
|
|
Radio navigational aids
|
