Vacuum-tight insulated lead-in structure
United States Patent 2144558
Inventors:
Bahls, Walter E.
Publication Date:
01/17/1939
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Assignee:
WESTINGHOUSE ELECTRIC & MFG CO
Primary Class:
Other Classes:
501/66, 285/192, 501/143, 338/237
International Classes:
H01J5/42; H01J13/34; H01J5/00; H01J13/00