US2909995A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Print checking circuit for accounting machines
Assignee: International Business Machines Corp
•
Filing: 1956-12-31
•
Granted: 1959-10-27
•
Expires: 1976-12-31
Abstract
No abstract record available.
Inventors
- 👤 Jr Joseph O Hannibal
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 06:57
CPC Classifications
B; B41; B41J; B41J1/00; B41J1/22; B41J1/32; B41J1/40; B41J1/42; B41J3/00; B41J3/407; B41J3/4075
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
US2343398A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1962-10-26 | 1963-04-27 | 1963-10-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-10-26 | 1967-04-27 | 1967-10-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-10-26 | 1971-04-27 | 1971-10-27 | $7700.00 | Window Closed / Lapsed |