Patent US2747723A successfully refreshed from Google Patents.
US2747723A
Expired / Lapsed
US
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Bucket conveyor with protected pivot shaft
Assignee: HANNAH JANE HAPMAN
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Filing: 1952-11-07
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Granted: 1956-05-29
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Expires: 1972-11-07
Abstract
No abstract record available.
Inventors
- 👤 Henry W Hapman
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 20:57
CPC Classifications
B; B65; B65G; B65G17/00; B65G17/16; B65G17/12; B65G17/126; B65G17/30; B65G17/32; B65G17/36; B65G2201/00; B65G2201/04
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) | 1959-05-29 | 1959-11-28 | 1960-05-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1963-05-29 | 1963-11-28 | 1964-05-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1967-05-29 | 1967-11-28 | 1968-05-29 | $7700.00 | Window Closed / Lapsed |