US2554751A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Safety latch mechanism for coal distributing aprons
Assignee: OGLE CONSTRUCTION CO
•
Filing: 1948-06-14
•
Granted: 1951-05-29
•
Expires: 1968-06-14
Abstract
No abstract record available.
Inventors
- 👤 Max W Powell
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 14:09
CPC Classifications
B; B65; B65G; B65G65/00; B65G2814/00; B65G2814/03; B65G2814/0301; B65G2814/0314; B65G2814/0319; B65G2814/0323
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US270736A
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US429006A
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US489926A
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US498419A
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US591364A
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US701320A
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US1828242A
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US2286560A
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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) | 1954-05-28 | 1954-11-27 | 1955-05-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1958-05-28 | 1958-11-27 | 1959-05-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1962-05-28 | 1962-11-27 | 1963-05-29 | $7700.00 | Window Closed / Lapsed |