Patent US3565463A successfully refreshed from Google Patents.
US3565463A
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US
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Security system
Assignee: De la Rue International Ltd
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Filing: 1969-09-15
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Granted: 1971-02-23
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Expires: 1989-09-15
Abstract
Abstract A SYSTEM OF SECURITY WHICH INCLUDES THE USE OF A CARD HAVING TRANSPARENT AREAS WITH AN ADHESIVE LAYER THEREON, AND A STAMP WITH MARKINGS ON ONE FACE, WHICH, WHEN THE STAMP IS AFFIXED TO THE ADHESIVE LAYER SO THAT THE MARKINGS CAN BE SEEN THROUGH A TRANSPARENT AREA, IS SO AFFECTED THAT ANY ATTEMPT TO REMOVE THE STAMP RESULTS IN ITS ALTERATION OR DAMAGE.
Inventors
- 👤 Derek Arthur Taylor
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 23:43
CPC Classifications
G; G09; G09F; G09F3/00; G09F3/02; G09F3/0291; G09F3/0292; B; B42; B42D; B42D15/00
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1974-02-22 | 1974-08-24 | 1975-02-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-02-22 | 1978-08-24 | 1979-02-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-02-22 | 1982-08-24 | 1983-02-23 | $7700.00 | Window Closed / Lapsed |