Secret radio communication
United States Patent 2476337
US Patent References:
/0725635.html
- - 0725635

/0770229.html
- - 0770229

/1309459.html
- - 1309459

Method and means for signaling
- - 1480217

Secret radiant telephony
- - 1596251


Inventors:
Varian, Russell H.
Publication Date:
07/19/1949
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Assignee:
SPERRY CORP
Primary Class:
380/254
Other Classes:
342/367, 342/361, 380/258
International Classes:
H04K1/02
US Patent References:
1622033Radiotelephony
1624601Secret communication
1634390
1667792Radio signaling system
1811102Signal transmission by guided and unguided waves
1931631Transmitting
2034775Receiving system adapted to practice secret communication method
2041245Wave signaling method and apparatus
2072962Radio system
2083653Transmission system
2092442Communication system
2199634Secret communication system
2211132Method of transmitting secret messages
2212238Ultra short wave course beacon
2262838Electric signaling system
2266194Television system
2266401Signaling system
2272839Radiant energy signaling system
2279031Radio navigation aid
2357439Radio communication by means of polarization modulation
2381444Radio system
Foreign References:
GB288714A
FR816345A