US2626828A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Bottom-dump charging bucket and door closing mechanism therefor
Assignee: Copperweld Steel Co
•
Filing: 1946-02-02
•
Granted: 1953-01-27
•
Expires: 1966-02-02
Abstract
No abstract record available.
Inventors
- 👤 Morgan Charles
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 18:22
CPC Classifications
B; B65; B65D; B65D90/00; B65D90/54; B65D90/62; B65D90/623
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US537258A
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US1490874A
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US1563949A
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US2163386A
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US2228060A
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US2350611A
Cited
US2338617A
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US2387457A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1956-01-27 | 1956-07-28 | 1957-01-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1960-01-27 | 1960-07-28 | 1961-01-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1964-01-27 | 1964-07-28 | 1965-01-27 | $7700.00 | Window Closed / Lapsed |