US2864558A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Card sensing mechanism
Assignee: Unisys Corp
•
Filing: 1953-04-08
•
Granted: 1958-12-16
•
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 01:14
CPC Classifications
G; G06; G06K; G06K7/00; G06K7/06
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
US998272A
Cited
US2107008A
Cited
US2374790A
Cited
US2297772A
Cited
US2302033A
Cited
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 |