Patent US4769571A successfully refreshed from Google Patents.
Patent US2479510A successfully refreshed from Google Patents.
US2479510A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Stalk cutter
Assignee: Individual
•
Filing: 1947-10-20
•
Granted: 1949-08-16
•
Expires: 1967-10-20
Abstract
No abstract record available.
Inventors
- 👤 Ernest B Pollard
- 👤 Theodore J Borchardt
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 18:10
CPC Classifications
A; A01; A01D; A01D34/00; A01D34/835; A01D34/8355
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
US349822A
Cited
US370616A
Cited
US585791A
Cited
US657411A
Cited
US988844A
Cited
US1059404A
Cited
US1619797A
Cited
US1698724A
Cited
US1676172A
Cited
US2048196A
Cited
US2302973A
Cited
US2279652A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1952-08-15 | 1953-02-14 | 1953-08-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1956-08-15 | 1957-02-14 | 1957-08-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1960-08-15 | 1961-02-14 | 1961-08-16 | $7700.00 | Window Closed / Lapsed |