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Patent US3519802A successfully refreshed from Google Patents.
US3519802A
Expired / Lapsed
US
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Cards employing capacitor sensing of encoded data
Assignee: SECURADYNE Ltd
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Filing: 1968-11-27
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Granted: 1970-07-07
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Expires: 1988-11-27
Abstract
No abstract record available.
Inventors
- 👤 Alphonse Cinque
- 👤 Max Norman Schweizer
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 12:38
CPC Classifications
G; G06; G06K; G06K19/00; G06K19/06; G06K19/067; G06K19/08; G06K19/10; G07; G07F; G07F7/00; G07F7/08; G07F7/086
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1973-07-06 | 1974-01-05 | 1974-07-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1977-07-06 | 1978-01-05 | 1978-07-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1981-07-06 | 1982-01-05 | 1982-07-07 | $7700.00 | Window Closed / Lapsed |