Patent US2642979A successfully refreshed from Google Patents.
US2642979A
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US
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Hopper and like containers
Assignee: Foundry Equipment Ltd
•
Filing: 1949-11-30
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Granted: 1953-06-23
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Expires: 1969-11-30
Abstract
No abstract record available.
Inventors
- 👤 Beech Austin Sidney
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 22:23
CPC Classifications
B; B22; B22C; B22C5/00; B22C5/14; B65; B65G; B65G65/00; B65G2814/00; B65G2814/03; B65G2814/0301; B65G2814/0314; B65G2814/0319; B65G2814/032
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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US1778389A
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Cited
US2116807A
Cited
GB481885A
Cited
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 |