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Patent US2556446A successfully refreshed from Google Patents.
US2556446A
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US
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Rotary stubble pulverizer
Assignee: Individual
•
Filing: 1946-11-18
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Granted: 1951-06-12
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Expires: 1966-11-18
Abstract
No abstract record available.
Inventors
- 👤 John W Roach
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 23:34
CPC Classifications
A; A01; A01D; A01D34/00; A01D34/01; A01D34/412; A01D34/42; A01D34/52; A01D34/535
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1128916A
Cited
US1368355A
Cited
US1505572A
Cited
US1698724A
Cited
US1676172A
Cited
US2347664A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1954-06-11 | 1954-12-11 | 1955-06-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1958-06-11 | 1958-12-11 | 1959-06-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1962-06-11 | 1962-12-11 | 1963-06-12 | $7700.00 | Window Closed / Lapsed |