CH207131A
(en )
1939-09-30
Electric discharge tube.
CH200824A
(en )
1938-10-31
Electric discharge tube.
CH204067A
(en )
1939-04-15
Device with an electric discharge tube.
AT134409B
(en )
1933-08-10
Electrical device with an electrode system arranged in a discharge tube.
CH204059A
(en )
1939-04-15
Electric discharge tube.
CH205234A
(en )
1939-06-15
Device with an electrical discharge tube for optical voltage display.
CH233012A
(en )
1944-06-30
Apparatus comprising an electric discharge tube with an electron mirror electrode.
AT134016B
(en )
1933-07-10
Electric discharge tube.
CH217330A
(en )
1941-10-15
Electric discharge tube with one or more secondary emission electrodes.
ES117172A1
(en )
1930-04-01
A current conducting device.
CH203240A
(en )
1939-02-28
Electric discharge tube with electrostatic deflection.
CH204073A
(en )
1939-04-15
Electric discharge tube.
CH152954A
(en )
1932-02-29
Electric upsetting device.
ES118078A1
(en )
1930-06-01
Device containing an electric discharge tube.
ES119846A1
(en )
1930-10-16
Improvements in electric discharge tubes for the emission of lightning.
CH153046A
(en )
1932-02-29
Self-seller with fee collection device.
CH208433A
(en )
1940-01-31
Electric discharge tube.
CH203246A
(en )
1939-02-28
Electric discharge tube.
CA302359A
(en )
1930-07-22
Electrical discharge device
CA304183A
(en )
1930-09-23
Electrical discharge device
CA305848A
(en )
1930-11-18
Electrical discharge device
ES119950A1
(en )
1930-12-01
An electric lighting device.
CA301726A
(en )
1930-07-01
Starting device for electric discharge tubes with auxiliary electrodes
CH203252A
(en )
1939-02-28
Device with at least two gas-filled discharge tubes connected in parallel.
AU3016530B
(en )
1931-12-24
Electric discharge luminous tube device