US2770087A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Harvesting machine for row crop stalks
Assignee: Research Corp
•
Filing: 1954-11-23
•
Granted: 1956-11-13
•
Expires: 1974-11-23
Abstract
No abstract record available.
Inventors
- 👤 Lloyd W Hurlbut
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 11:24
CPC Classifications
A; A01; A01D; A01D45/00; A01D45/02; A01D45/021
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US348730A
Cited
US1695902A
Cited
US1945364A
Cited
US2333901A
Cited
US2371822A
Cited
US2379822A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1959-11-13 | 1960-05-14 | 1960-11-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1963-11-13 | 1964-05-14 | 1964-11-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1967-11-13 | 1968-05-14 | 1968-11-13 | $7700.00 | Window Closed / Lapsed |