Device for optionally switching on either of two filament cathodes of an chi-ray tube
United States Patent 3110810

Inventors:
Jacobus, Fransen
Publication Date:
11/12/1963
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Assignee:
PHILIPS CORP
Primary Class:
Other Classes:
378/134, 315/205, 315/101
International Classes:
H05G1/52; H05G1/00
US Patent References:
2748292Simplified chi-ray apparatus
Foreign References:
DE657284C
AT159930B
FR1076834A