US3538690A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Sickle bar
Assignee: Individual
•
Filing: 1967-03-20
•
Granted: 1970-11-10
•
Expires: 1987-03-20
Abstract
No abstract record available.
Inventors
- 👤 William L Hinks
- 👤 Nick D Diamantides
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 08:18
CPC Classifications
A; A01; A01D; A01D34/00; A01D34/01; A01D34/02; A01D34/13; A01D34/135; A01D34/14; A01D2101/00
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2735254A
Cited
US834969A
Cited
US1094260A
Cited
US2782586A
Cited
US2994175A
Cited
US3114230A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1973-11-09 | 1974-05-11 | 1974-11-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1977-11-09 | 1978-05-11 | 1978-11-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1981-11-09 | 1982-05-11 | 1982-11-10 | $7700.00 | Window Closed / Lapsed |