US2900032A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Automatic self-aligning two-way plow
Assignee: ALICE MARIAN MELLEN
•
Filing: 1956-07-30
•
Granted: 1959-08-18
•
Expires: 1976-07-30
Abstract
No abstract record available.
Inventors
- 👤 Mellen William Fisk
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 14:42
CPC Classifications
A; A01; A01B; A01B3/00; A01B3/36; A01B3/40; A01B63/00; A01B63/02; A01B63/023
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) | 1962-08-17 | 1963-02-16 | 1963-08-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-08-17 | 1967-02-16 | 1967-08-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-08-17 | 1971-02-16 | 1971-08-18 | $7700.00 | Window Closed / Lapsed |