Patent US2577441A successfully refreshed from Google Patents.
US3080960A
Expired / Lapsed
US
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Grain auger attachment
Assignee: Individual
•
Filing: 1959-04-13
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Granted: 1963-03-12
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Expires: 1979-04-13
Abstract
No abstract record available.
Inventors
- 👤 Eugene F Rensch
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 01:10
CPC Classifications
B; B65; B65G; B65G11/00; B65G11/14; B65G11/146
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2467682A
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US2630905A
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US2619219A
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US2706046A
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US2891655A
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US2883076A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1966-03-11 | 1966-09-10 | 1967-03-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1970-03-11 | 1970-09-10 | 1971-03-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1974-03-11 | 1974-09-10 | 1975-03-12 | $7700.00 | Window Closed / Lapsed |