Radiant energy – Radiation tracer methods – Radioactive tracer methods
Patent
1975-10-14
1977-04-19
Borchelt, Archie R.
Radiant energy
Radiation tracer methods
Radioactive tracer methods
250304, G21H 502
Patent
active
040190536
ABSTRACT:
Methods of detecting the presence of concealed weapons and determining the type of weapons with a greater degree of certainty and reliability. The method involves tagging of the weapon with a radioactive marking that produces penetrative radiation, and providing radiation detectors at entrances to commercial and private residences, airlines, vehicles and other places. According to a preferred method, the tagging or marking of the weapon is in a form of a digital coding; and a different common coding is applied to each different kind of weapon. For example, hand guns receive a common code of one type; knives a different code; explosives a third different code, and the like.
REFERENCES:
patent: 2474271 (1949-06-01), Meyer
patent: 3255352 (1966-06-01), Johnston
patent: 3358602 (1967-12-01), Chope
Coding Documents by Trace Element Inclusion, from IBM Technical Disclosure Bulletin, vol. 11, No. 11; Apr. 1969, p. 1394.
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