Communications: electrical – Selective – Monitoring in addition to control
Patent
1964-02-05
1976-02-17
Farley, Richard A.
Communications: electrical
Selective
Monitoring in addition to control
340 3FM, G01S 968
Patent
active
039394638
ABSTRACT:
1. In combination in an acoustic obstacle detection and navigating system;
REFERENCES:
patent: 2301929 (1942-11-01), Budenbom
patent: 2421394 (1947-06-01), Schelleng
patent: 2528119 (1950-10-01), Crosby
patent: 2724817 (1955-11-01), Hisserich
patent: 2977568 (1961-03-01), Roshon, Jr. et al.
patent: 3164659 (1965-01-01), Abrams
patent: 3171094 (1965-02-01), Geren et al.
Kelly Neil C.
McFarland Robert L.
Sampsell Jack W.
Farley Richard A.
Phillips T. M.
Rubens G. J.
Sciascia R. S.
The United States of America as represented by the Secretary of
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