US2951547A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Rotary harrow
Assignee: Individual
•
Filing: 1957-09-24
•
Granted: 1960-09-06
•
Expires: 1977-09-24
Abstract
No abstract record available.
Inventors
- 👤 Forby W Lawrence
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 22:17
CPC Classifications
A; A01; A01B; A01B21/00; A01B21/02; A01B21/06; Y; Y10; Y10T; Y10T403/00; Y10T403/71; Y10T403/7182
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
US369600A
Cited
US518520A
Cited
US714378A
Cited
US828148A
Cited
US1134832A
Cited
US1213566A
Cited
US1396905A
Cited
US1471692A
Cited
US1747955A
Cited
US2215364A
Cited
US2381005A
Cited
US2556492A
Cited
US2580721A
Cited
US2699023A
Cited
US2766675A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1963-09-06 | 1964-03-07 | 1964-09-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-09-06 | 1968-03-07 | 1968-09-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-09-06 | 1972-03-07 | 1972-09-06 | $7700.00 | Window Closed / Lapsed |