Penetration sensing system with radiation-emitting material

Details Penetration sensing system with radiation-emitting material Penetration sensing system with radiation-emitting material

1972-01-04

1983-08-09

Nelson, Peter A.

Radiant energy

Invisible radiant energy responsive electric signalling

2505061, 340550, 340571, 340572, G01J 100

Patent

active

043980899

ABSTRACT:
A system for protecting sealed or closed packaging means from tampering or nauthorized opening. A source of radiation cannot affect radiation sensors until the packaging means has been penetrated or tampered with. Then the radiation sensors set off a visual alarm, an audible alarm, or otherwise indicate that there has been an unauthorized penetration.

REFERENCES:
patent: 3299269 (1967-01-01), Hanson et al.
patent: 3351049 (1967-11-01), Lawrence
patent: 3508055 (1970-04-01), Wright et al.
patent: 3654464 (1972-04-01), Johnson et al.

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