Patent US3911546A successfully refreshed from Google Patents.
Patent US2660439A successfully refreshed from Google Patents.
US2660439A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Manure spreader
Assignee: Allis Chalmers Corp
•
Filing: 1950-03-03
•
Granted: 1953-11-24
•
Expires: 1970-03-03
Abstract
No abstract record available.
Inventors
- 👤 Charles J Scranton
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 11:48
CPC Classifications
A; A01; A01C; A01C3/00; A01C3/06; A01C3/063
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
US947277A
Cited
US1291436A
Cited
US1979945A
Cited
US1924825A
Cited
US2256655A
Cited
US2311726A
Cited
US2343303A
Cited
US2296474A
Cited
US2296909A
Cited
US2430020A
Cited
GB597224A
Cited
US2507669A
Cited
US2581263A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1956-11-23 | 1957-05-25 | 1957-11-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1960-11-23 | 1961-05-25 | 1961-11-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1964-11-23 | 1965-05-25 | 1965-11-24 | $7700.00 | Window Closed / Lapsed |