US2451752A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Record punching machine
Assignee: International Business Machines Corp
•
Filing: 1946-08-24
•
Granted: 1948-10-19
•
Expires: 1966-08-24
Abstract
No abstract record available.
Inventors
- 👤 Clair D Lake
- 👤 Francis E Hamilton
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 19:21
CPC Classifications
G; G05; G05B; G05B19/00; G05B19/02; G05B19/18; G05B19/19; G05B19/21; G05B19/23; G05B19/231; G05B19/237
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1763163A
Cited
US1878935A
Cited
US2046082A
Cited
US2247895A
Cited
US2328612A
Cited
US2343414A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1951-10-19 | 1952-04-19 | 1952-10-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1955-10-19 | 1956-04-19 | 1956-10-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1959-10-19 | 1960-04-19 | 1960-10-19 | $7700.00 | Window Closed / Lapsed |