US2643159A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Grain conveyer
Assignee: GEN SHEET METAL WORKS
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Filing: 1950-07-22
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Granted: 1953-06-23
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Expires: 1970-07-22
Abstract
No abstract record available.
Inventors
- 👤 Brackett Donald Leon
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 22:12
CPC Classifications
B; B65; B65G; B65G53/00; B65G2812/00; B65G2812/16; B65G2812/1608; B65G2812/1675; B65G2812/1683
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1956-06-22 | 1956-12-22 | 1957-06-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1960-06-22 | 1960-12-22 | 1961-06-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1964-06-22 | 1964-12-22 | 1965-06-23 | $7700.00 | Window Closed / Lapsed |