Title:
Photoelectric wall switch and relay system
United States Patent 3328592
Inventors:
Shaw II, Howard R.
Application Number:
US39632864A
Publication Date:
06/27/1967
Filing Date:
09/14/1964
Assignee:
Shaw II, Howard R.
Primary Class:
Other Classes:
250/206, 361/173
International Classes:
H01H47/24
View Patent Images:
US Patent References:
2685064Electrical measuring and indicating system1954-07-27
2363145Telephone electrical circuit control system1944-11-21
2228780N/A1941-01-14
2174206Amusement device1939-09-26
2039604Signal for motor vehicles1936-05-05
1819439Speed regulating system1931-08-18