Electronic pointer for television images
United States Patent 2487641
US Patent References:
Television method
- - 2047533

Thermionic relay
- - 2225032

Television system
- - 2275026


Inventors:
Denk, William E.
Publication Date:
11/08/1949
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Assignee:
PHILCO CORP
Primary Class:
Other Classes:
315/1
International Classes:
A63F13/04; A63F13/02