US2690622A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Plow and conveyer adjustment for terracing machines
Assignee: Deere and Co
•
Filing: 1949-11-25
•
Granted: 1954-10-05
•
Expires: 1969-11-25
Abstract
No abstract record available.
Inventors
- 👤 Walter H Silver
- 👤 Robert E Cox
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 04:33
CPC Classifications
E; E02; E02F; E02F3/00; E02F3/04; E02F3/76; E02F3/7695; A; A01; A01B; A01B13/00
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
US185500A
Cited
US379705A
Cited
US623395A
Cited
US759606A
Cited
US1471887A
Cited
US1981170A
Cited
US1933485A
Cited
US2089319A
Cited
US2199239A
Cited
US2248709A
Cited
US2514780A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1957-10-04 | 1958-04-05 | 1958-10-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1961-10-04 | 1962-04-05 | 1962-10-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1965-10-04 | 1966-04-05 | 1966-10-05 | $7700.00 | Window Closed / Lapsed |