Patent US2497735A successfully refreshed from Google Patents.
US2497735A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Metalworking machine adapted to act independently or to augment the functions of machine tools
Assignee: Individual
•
Filing: 1947-08-13
•
Granted: 1950-02-14
•
Expires: 1967-08-13
Abstract
No abstract record available.
Inventors
- 👤 David S Mccullough
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 07:48
CPC Classifications
B; B23; B23C; B23C7/00; Y; Y10; Y10T; Y10T409/00; Y10T409/30; Y10T409/30448; Y10T409/30784; Y10T409/307952; Y10T409/308232; Y10T409/308456
Claims Analysis
Total Claims: 0
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1953-02-13 | 1953-08-15 | 1954-02-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1957-02-13 | 1957-08-15 | 1958-02-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1961-02-13 | 1961-08-15 | 1962-02-14 | $7700.00 | Window Closed / Lapsed |