US2491381A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Machine tool
Assignee: Warner and Swasey Co
•
Filing: 1945-10-10
•
Granted: 1949-12-13
•
Expires: 1965-10-10
Abstract
No abstract record available.
Inventors
- 👤 Max E Lange
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 20:10
CPC Classifications
B; B23; B23Q; B23Q16/00; B23Q16/006; Y; Y10; Y10T; Y10T29/00; Y10T29/51; Y10T29/518
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US969433A
Cited
GB190809831A
Cited
US1205970A
Cited
US1245653A
Cited
US1578197A
Cited
US1383658A
Cited
US2006144A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1952-12-12 | 1953-06-13 | 1953-12-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1956-12-12 | 1957-06-13 | 1957-12-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1960-12-12 | 1961-06-13 | 1961-12-13 | $7700.00 | Window Closed / Lapsed |