Patent US2939110A successfully refreshed from Google Patents.
US2939110A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Comparing device for employment in a record card collator or like machine
Assignee: International Business Machines Corp
•
Filing: 1954-02-04
•
Granted: 1960-05-31
•
Expires: 1974-02-04
Abstract
No abstract record available.
Inventors
- 👤 Horace S Beattie
- 👤 Ralph E Page
- 👤 Ralph L Palmer
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 11:18
CPC Classifications
G; G11; G11C; G11C13/00; G11C13/04; G11C13/06; G06; G06F; G06F7/00; G06F7/02; G06F7/026; G06F7/06; G06K; G06K7/00; G06K7/10; G06K7/10544; G06K7/10821; G06K7/1093; G11C11/00; G11C11/21; G11C11/42
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
US2531895A
Cited
US2514054A
Cited
US2712898A
Cited
US2660372A
Cited
US2673032A
Cited
US2628346A
Cited
US2680239A
Cited
US2737646A
Cited
US2776418A
Cited
US2679638A
Cited
US2785856A
Cited
US2821696A
Cited
US2702380A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1963-05-31 | 1963-11-30 | 1964-05-31 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-05-31 | 1967-11-30 | 1968-05-31 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-05-31 | 1971-11-30 | 1972-05-31 | $7700.00 | Window Closed / Lapsed |