Communications: electrical – Condition responsive indicating system – Specific condition
Patent
1978-08-23
1980-07-15
Caldwell, Sr., John W.
Communications: electrical
Condition responsive indicating system
Specific condition
179 82, 343742, 455 41, G08B 1318
Patent
active
042131227
ABSTRACT:
An intrusion detection system utilizes a radio frequency radiative system whose near electromagnetic field is monitored by receiving devices which respond, in a measurable way, to any disturbance of the near electromagnetic field by physical intrusion.
REFERENCES:
patent: 2355395 (1944-08-01), Rubenstein
patent: 3237105 (1966-02-01), Kalmus
patent: 3439358 (1969-04-01), Salmons
patent: 3794992 (1974-02-01), Gehman
patent: 3815130 (1974-06-01), Hayo
patent: 3896425 (1975-07-01), Erichsen
patent: 4135185 (1979-01-01), Rotman et al.
Fante Ronald L.
Franchi Peter R.
Karas Nicholas V.
Rotman Walter
Caldwell Sr. John W.
Goldman Sherman H.
Nowicki Joseph E.
Rusz Joseph E.
The United States of America as represented by the Secretary of
LandOfFree
Intrusion detection system does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Intrusion detection system, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Intrusion detection system will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-466403