US2991883A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Grain handling machine
Assignee: Individual
•
Filing: 1957-05-10
•
Granted: 1961-07-11
•
Expires: 1977-05-10
Abstract
No abstract record available.
Inventors
- 👤 Lester C Hendrickson
- 👤 Harold W Stevens
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 09:32
CPC Classifications
B; B02; B02B; B02B1/00; B02B1/02; B65; B65G; B65G53/00; B65G53/04; B65G53/28
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US247277A
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US1528983A
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US1680243A
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US1701126A
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US1735479A
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US1905458A
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US2094438A
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US2219453A
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US2471326A
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US2389715A
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US2890764A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1964-07-10 | 1965-01-09 | 1965-07-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1968-07-10 | 1969-01-09 | 1969-07-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1972-07-10 | 1973-01-09 | 1973-07-11 | $7700.00 | Window Closed / Lapsed |