US2397048A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Pipe-shearing mechanism
Assignee: JOHN L PRATT
•
Filing: 1944-08-16
•
Granted: 1946-03-19
•
Expires: 1964-08-16
Abstract
No abstract record available.
Inventors
- 👤 Elston A Roop
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 11:38
CPC Classifications
B; B23; B23D; B23D21/00; B23D21/14; Y; Y10; Y10T; Y10T83/00; Y10T83/202; Y10T83/2092; Y10T83/2096; Y10T83/2135; Y10T83/2163; Y10T83/2166; Y10T83/384; Y10T83/385; Y10T83/392; Y10T83/393; Y10T83/395; Y10T83/396; Y10T83/397; Y10T83/398; Y10T83/403; Y10T83/869; Y10T83/8873; Y10T83/8874; Y10T83/929; Y10T83/9411; Y10T83/9447; Y10T83/9457; Y10T83/9473; Y10T83/9478
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
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) | 1949-03-18 | 1949-09-17 | 1950-03-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1953-03-18 | 1953-09-17 | 1954-03-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1957-03-18 | 1957-09-17 | 1958-03-19 | $7700.00 | Window Closed / Lapsed |