Base structure for miniature electron tubes
United States Patent 2431198
US Patent References:
/1864528.html
- - 1864528

Electric discharge tube
- - 1955396

Replaceable tube holder
- - 1982319

Electrical connector for tubes
- - 2353348


Inventors:
Sam, Posen
Publication Date:
11/18/1947
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Assignee:
BELTONE HEARING AID CO
Primary Class:
439/617
Other Classes:
361/815, 29/831
International Classes:
H01J5/50; H01J5/00
Foreign References:
DE320531C
FR562647A