US2539998A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Card selecting apparatus
Assignee: International Business Machines Corp
•
Filing: 1949-05-18
•
Granted: 1951-01-30
•
Expires: 1969-05-18
Abstract
No abstract record available.
Inventors
- 👤 Cyril G Holland-Martin
- 👤 Aldred W Bowyer
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 08:20
CPC Classifications
G; G06; G06F; G06F7/00; G06F7/02; B; B65; B65H; B65H29/00; B65H29/12; B65H29/125; B65H29/14; B65H31/00; B65H31/04; B65H31/08; B65H31/10; B65H31/24; G06F7/22; B65H2405/00; B65H2405/30; B65H2405/33; B65H2405/331; B65H2405/3311
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
GB256223A
Cited
US2265439A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1954-01-29 | 1954-07-31 | 1955-01-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1958-01-29 | 1958-07-31 | 1959-01-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1962-01-29 | 1962-07-31 | 1963-01-30 | $7700.00 | Window Closed / Lapsed |