US2989800A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Rotary cutters
Assignee: Individual
•
Filing: 1957-08-08
•
Granted: 1961-06-27
•
Expires: 1977-08-08
Abstract
No abstract record available.
Inventors
- 👤 Comly Elwood Howard
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 12:08
CPC Classifications
B; B23; B23C; B23C5/00; B23C5/16; B23C5/20; B23C5/22; B23C5/2239; B23C5/2252; Y; Y10; Y10T; Y10T407/00; Y10T407/19; Y10T407/1906; Y10T407/1908; Y10T407/192; Y10T407/1942; Y10T407/1944; Y10T407/22; Y10T407/2272; Y10T407/2282; Y10T407/2292
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1341565A
Cited
US2407502A
Cited
US2521035A
Cited
US2787823A
Cited
US2805467A
Cited
US2712686A
Cited
US2805469A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1964-06-26 | 1964-12-26 | 1965-06-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1968-06-26 | 1968-12-26 | 1969-06-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1972-06-26 | 1972-12-26 | 1973-06-27 | $7700.00 | Window Closed / Lapsed |