Patent US2957292A successfully refreshed from Google Patents.
US2957292A
Expired / Lapsed
US
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Hay crushing rolls with spiral grooves
Assignee: International Motors LLC
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Filing: 1958-05-06
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Granted: 1960-10-25
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Expires: 1978-05-06
Abstract
No abstract record available.
Inventors
- 👤 Leland R Griffiths
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 04:12
CPC Classifications
B; B02; B02C; B02C4/00; B02C4/28; B02C4/30; A; A01; A01D; A01D82/00; A01D82/02; B30; B30B; B30B9/00; B30B9/02; B30B9/20; Y; Y10; Y10S; Y10S56/00; Y10S56/01
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) | 1963-10-25 | 1964-04-25 | 1964-10-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-10-25 | 1968-04-25 | 1968-10-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-10-25 | 1972-04-25 | 1972-10-25 | $7700.00 | Window Closed / Lapsed |