US2638726A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Disk harrow hitch and angling means
Assignee: DEARBORN MOTORS Corp
•
Filing: 1947-11-07
•
Granted: 1953-05-19
•
Expires: 1967-11-07
Abstract
No abstract record available.
Inventors
- 👤 Fredrick D Sawyer
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 01:52
CPC Classifications
A; A01; A01B; A01B23/00; A01B23/04; A01B23/046; A01B59/00; A01B59/04; A01B59/042
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
US1669080A
Cited
US1913036A
Cited
US1967493A
Cited
US2228508A
Cited
US2283377A
Cited
US2285550A
Cited
US2353790A
Cited
US2413807A
Cited
US2469605A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1956-05-18 | 1956-11-17 | 1957-05-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1960-05-18 | 1960-11-17 | 1961-05-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1964-05-18 | 1964-11-17 | 1965-05-19 | $7700.00 | Window Closed / Lapsed |