US2580306A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Silo unloader
Assignee: Leach Co Inc
•
Filing: 1945-09-05
•
Granted: 1951-12-25
•
Expires: 1965-09-05
Abstract
No abstract record available.
Inventors
- 👤 Elbert C Leach
- 👤 Otto F Manthie
- 👤 George D Clapp
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 22:15
CPC Classifications
A; A01; A01F; A01F25/00; A01F25/16; A01F25/20; A01F25/2009; B; B65; B65G; B65G53/00; B65G2812/00; B65G2812/16; B65G2812/1608; B65G2812/1675
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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US826646A
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US1007954A
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US1233308A
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US1479990A
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US1550311A
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US1500966A
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US1971425A
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US2148501A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1954-12-24 | 1955-06-25 | 1955-12-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1958-12-24 | 1959-06-25 | 1959-12-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1962-12-24 | 1963-06-25 | 1963-12-25 | $7700.00 | Window Closed / Lapsed |