Patent US3587484A successfully refreshed from Google Patents.
US3587484A
Expired / Lapsed
US
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Security container
Assignee: Vigil Security Ltd
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Filing: 1969-07-15
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Granted: 1971-06-28
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Expires: 1989-07-15
Abstract
Abstract A PORTABLE SECURITY CONTAINER IS PROVIDED, AT A WALL THEREOF, WITH A GUARD CIRCUIT COMPRISING AN ELECTRICALLY CONTINUOUS ELONGATED CONVOLUTED CONDUCTOR, AND AT LEAST ONE OPEN CIRCUITED ELONGATED CONVOLUTED OR BRANCHED CONDUCTOR CLOSELY PROXIMATE THE CONTINUOUS CONDUCTOR BUT INSULATED THEREFROM, A FURTHER CIRCUIT WHICH CAN TAKE MORE THAN ONE STATE BEING ADAPTED TO CHANGE STATE IN RESPONSE TO A CHANGE IN THE RESISTANCE OF THE CONTINUOUS CONDUCTOR, OR TO CHANGE STATE IF CONTINUITY IS ESTABLISHED BETWEEN AN OPEN CIRCUITED CONDUCTOR AND THE CONTINUOUS CONDUCTOR, FOR EXAMPLE IF AN ATTEMPT IS MADE TO PENETRATE THE WALL.
Inventors
- 👤 Edward A Munton
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 21:54
CPC Classifications
G; G08; G08B; G08B13/00; G08B13/02; G08B13/14; G08B13/1445; G08B13/1454; A; A45; A45C; A45C13/00; A45C13/18; A45C13/24; E; E05; E05G; E05G1/00; E05G1/10
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) | 1974-06-27 | 1974-12-27 | 1975-06-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-06-27 | 1978-12-27 | 1979-06-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-06-27 | 1982-12-27 | 1983-06-28 | $7700.00 | Window Closed / Lapsed |