Continuously checked communication system
United States Patent 2435010
US Patent References:
Frequency stabilization system
- - 2114036
Method and apparatus for controlling radio receivers
- - 2115813
Frequency stabilization system
- - 2114036
Method and apparatus for controlling radio receivers
- - 2115813
Inventors:
Knapp, James W.
O'brien, John C.
O'brien, John C.
Publication Date:
01/27/1948
View Patent Images:
Export Citation:
Assignee:
GEN RAILWAY SIGNAL CO
Primary Class:
Other Classes:
246/7, 455/79
International Classes:
H04B1/54