US2737871A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Weed cutter blades for the end sections of cultivator rotors
Assignee: Individual
•
Filing: 1950-05-29
•
Granted: 1956-03-13
•
Expires: 1970-05-29
Abstract
No abstract record available.
Inventors
- 👤 Rogers Douglas Cecil
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 10:24
CPC Classifications
A; A01; A01D; A01D34/00; A01D34/01; A01D34/412; A01D34/63; A01D34/73; A01B; A01B39/00; A01B39/08
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US360586A
Cited
US499744A
Cited
GB354311A
Cited
US2192762A
Cited
US2403271A
Cited
US2480419A
Cited
US2510523A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1959-03-13 | 1959-09-12 | 1960-03-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1963-03-13 | 1963-09-12 | 1964-03-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1967-03-13 | 1967-09-12 | 1968-03-13 | $7700.00 | Window Closed / Lapsed |