US2551778A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Sweep cutter
Assignee: ROBERT H CLARK
•
Filing: 1944-12-06
•
Granted: 1951-05-08
•
Expires: 1964-12-06
Abstract
No abstract record available.
Inventors
- 👤 Harry C Wilson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 19:30
CPC Classifications
B; B23; B23B; B23B51/00; B23B51/04; B23B51/05; Y; Y10; Y10T; Y10T407/00; Y10T407/13; Y10T407/134; Y10T407/22; Y10T407/2222; Y10T408/00; Y10T408/86; Y10T408/87; Y10T408/8713
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US63882A
Cited
US286610A
Cited
US1323570A
Cited
US1237021A
Cited
US1382447A
Cited
US1746463A
Cited
US2083418A
Cited
US2225224A
Cited
US2269510A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1954-05-07 | 1954-11-06 | 1955-05-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1958-05-07 | 1958-11-06 | 1959-05-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1962-05-07 | 1962-11-06 | 1963-05-08 | $7700.00 | Window Closed / Lapsed |