United States Patent 2769114
Inventors:
Williams, Paul D.
Publication Date:
10/30/1956
Assignee:
EITEL MCCULLOUGH INC
Other Classes:
313/355, 427/126.100, 428/564, 428/663, 427/123, 313/558, 75/244, 252/512, 75/228
International Classes:
H01J19/30; H01J19/00