US2815631A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Rotary mower
Assignee: JOHN DEERE PLOW Co
•
Filing: 1954-09-01
•
Granted: 1957-12-10
•
Expires: 1974-09-01
Abstract
No abstract record available.
Inventors
- 👤 John A Northcote
- 👤 David W Dixon
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 05:32
CPC Classifications
A; A01; A01D; A01D34/00; A01D34/01; A01D34/412; A01D34/63; A01D34/835; A01D34/8355
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US813957A
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US1419158A
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US1987565A
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US2429492A
Cited
US2621457A
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US2640711A
Cited
US2649678A
Cited
US2659191A
Cited
US2692466A
Cited
US2667727A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1960-12-09 | 1961-06-10 | 1961-12-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1964-12-09 | 1965-06-10 | 1965-12-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1968-12-09 | 1969-06-10 | 1969-12-10 | $7700.00 | Window Closed / Lapsed |