US2476039A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Material loss-preventing device for bucket conveyers
Assignee: HANNAH J HAPMAN
•
Filing: 1944-03-18
•
Granted: 1949-07-12
•
Expires: 1964-03-18
Abstract
No abstract record available.
Inventors
- 👤 Henry W Hapman
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 01:24
CPC Classifications
B; B65; B65G; B65G17/00; B65G17/30; B65G17/32; B65G17/36; B65G17/12; B65G17/126; B65G17/16; B65G67/00; B65G2201/00; B65G2201/04
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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US1449659A
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US1445277A
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US1750721A
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US1824611A
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US2104431A
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US2096948A
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US2189243A
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1952-07-11 | 1953-01-10 | 1953-07-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1956-07-11 | 1957-01-10 | 1957-07-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1960-07-11 | 1961-01-10 | 1961-07-12 | $7700.00 | Window Closed / Lapsed |