Patent US2630308A successfully refreshed from Google Patents.
US2630308A
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US
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Mining and loading machine
Assignee: Jeffrey Manufacturing Co
•
Filing: 1948-10-22
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Granted: 1953-03-03
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Expires: 1968-10-22
Abstract
No abstract record available.
Inventors
- 👤 Sterling C Moon
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 21:59
CPC Classifications
E; E21; E21C; E21C27/00; E21C27/10; E21C27/12; E21C27/128
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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US2520040A
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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) | 1956-03-02 | 1956-09-01 | 1957-03-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1960-03-02 | 1960-09-01 | 1961-03-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1964-03-02 | 1964-09-01 | 1965-03-03 | $7700.00 | Window Closed / Lapsed |