US3527031A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method and apparatus for harvesting field crops
Assignee: DAVID C WINGER
•
Filing: 1967-03-03
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Granted: 1970-09-08
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Expires: 1987-03-03
Abstract
No abstract record available.
Inventors
- 👤 David C Winger
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 03:20
CPC Classifications
F; F26; F26B; F26B1/00; F26B1/005; A; A01; A01D; A01D43/00; A01D43/003; F26B17/00; F26B17/02; F26B17/08; F26B19/00; F26B19/005; F26B3/00; F26B3/32; F26B3/34; F26B3/343
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1973-09-07 | 1974-03-09 | 1974-09-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1977-09-07 | 1978-03-09 | 1978-09-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1981-09-07 | 1982-03-09 | 1982-09-08 | $7700.00 | Window Closed / Lapsed |