US2863576A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method and apparatus for unloading a silo
Assignee: AMIE LEITH TRASK
•
Filing: 1955-05-13
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Granted: 1958-12-09
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Expires: 1975-05-13
Abstract
No abstract record available.
Inventors
- 👤 Sr Neil W Trask
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 06:19
CPC Classifications
B; B65; B65G; B65G65/00; B65G65/30; B65G65/34; B65G65/36; B65G65/365; A; A01; A01F; A01F25/00; A01F25/16; A01F25/20; A01F25/2009
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
GB118055A
Cited
US1971716A
Cited
US2500043A
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US2529583A
Cited
US2505194A
Cited
US2571277A
Cited
CH279067A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1961-12-08 | 1962-06-09 | 1962-12-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-12-08 | 1966-06-09 | 1966-12-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-12-08 | 1970-06-09 | 1970-12-09 | $7700.00 | Window Closed / Lapsed |