Stock material or miscellaneous articles – Sheet – web – or layer weakened to permit separation through...
Patent
1993-08-09
1994-06-21
Zirker, Daniel
Stock material or miscellaneous articles
Sheet, web, or layer weakened to permit separation through...
430 10, 430 12, 40361, 428916, G03C 300
Patent
active
053227239
ABSTRACT:
The disclosure relates to a tamper-proof transparency mount which includes a zipper tab permitting easy access and removal of the transparency from its mount when sealed without doing any damage to the transparency under authorized conditions. Several embodiments are disclosed which provide different locations as well as different style tabs. The transparency mount provides an indication of unauthorized entry and also easy access for authorized entry to the transparency.
REFERENCES:
patent: 2842882 (1958-07-01), Greene et al.
patent: 3336690 (1967-08-01), Walter et al.
patent: 3949501 (1976-04-01), Andrews et al.
patent: 4592976 (1986-06-01), Whitehead
patent: 4692394 (1987-09-01), Drexler
patent: 4868027 (1989-09-01), Hunkeler et al.
patent: 4902142 (1990-02-01), Lammert et al.
Husar Cornelius J.
Zirker Daniel
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