US2335981A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Record controlled machine
Assignee: International Business Machines Corp
•
Filing: 1943-04-06
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Granted: 1943-12-07
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Expires: 1963-04-06
Abstract
No abstract record available.
Inventors
- 👤 Thomas J Watson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 18:29
CPC Classifications
B; B21; B21D; B21D53/00; B21D53/82; Y; Y10; Y10T; Y10T83/00; Y10T83/162; Y10T83/166; Y10T83/202; Y10T83/2066; Y10T83/207; Y10T83/242; Y10T83/97
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1946-12-06 | 1947-06-07 | 1947-12-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1950-12-06 | 1951-06-07 | 1951-12-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1954-12-06 | 1955-06-07 | 1955-12-07 | $7700.00 | Window Closed / Lapsed |