US2801137A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Silo unloader
Assignee: CLAY EQUIPMENT CORP
•
Filing: 1954-08-24
•
Granted: 1957-07-30
•
Expires: 1974-08-24
Abstract
No abstract record available.
Inventors
- 👤 Roger L Clay
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 12:56
CPC Classifications
B; B65; B65G; B65G53/00; B65G2812/00; B65G2812/16; B65G2812/1608; B65G2812/1675
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
US772911A
Cited
US2532318A
Cited
US2488626A
Cited
US2651438A
Cited
US2671696A
Cited
US2639949A
Cited
US2719058A
Cited
US2739846A
Cited
US2677474A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1960-07-29 | 1961-01-28 | 1961-07-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1964-07-29 | 1965-01-28 | 1965-07-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1968-07-29 | 1969-01-28 | 1969-07-30 | $7700.00 | Window Closed / Lapsed |