Patent US2864558A successfully refreshed from Google Patents.
US2864558A
Expired / Lapsed
US
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Card sensing mechanism
Assignee: Unisys Corp
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Filing: 1953-04-08
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Granted: 1958-12-16
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Expires: 1973-04-08
Abstract
No abstract record available.
Inventors
- 👤 Wockenfuss William
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 04:47
CPC Classifications
G; G06; G06K; G06K7/00; G06K7/06
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US998272A
Cited
US2107008A
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US2374790A
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US2297772A
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US2302033A
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US2372882A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1961-12-15 | 1962-06-16 | 1962-12-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-12-15 | 1966-06-16 | 1966-12-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-12-15 | 1970-06-16 | 1970-12-16 | $7700.00 | Window Closed / Lapsed |