Communications: electrical – Condition responsive indicating system – Specific condition
Patent
1994-03-09
1997-05-06
Hofsass, Jeffery
Communications: electrical
Condition responsive indicating system
Specific condition
340539, 324 95, 324 96, 381 68, 381 686, 381 69, G08B 1712
Patent
active
056275218
ABSTRACT:
A self-contained personal microwave and RF detector, which includes, inter alia, the housing and associated electronics of a standard hearing aid, is configured to produce an audible indication to a wearer thereof in response to electromagnetic fields of dangerously high levels within predetermined frequency ranges.
REFERENCES:
patent: 4644330 (1987-02-01), Dawling
patent: 5185802 (1993-02-01), Stanton
patent: 5295191 (1994-03-01), Van Vroenhoven
Electronics Engineers' Handbook, Donald G. Fink & Donald Christiansen, 3rd dition, Electromagnetic Spectrum (pp. 42-43).
Forstall John R.
Olsen Richard G.
Garvert William
Hofsass Jeffery
Lieu Julie B.
Spevack A. D.
The United States of America as represented by the Secretary of
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