Patent US2612119A successfully refreshed from Google Patents.
US2612119A
Expired / Lapsed
US
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Mine car
Assignee: Watt Car & Wheel Co
•
Filing: 1950-05-05
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Granted: 1952-09-30
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Expires: 1970-05-05
Abstract
No abstract record available.
Inventors
- 👤 Clarence A Boyd
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 05:40
CPC Classifications
B; B61; B61D; B61D7/00; B61D7/14; B61D7/16; B61D7/24; B61D7/30
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1616573A
Cited
US2044638A
Cited
US1937556A
Cited
US2250555A
Cited
US2422136A
Cited
US2261601A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1955-09-30 | 1956-03-31 | 1956-09-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1959-09-30 | 1960-03-31 | 1960-09-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1963-09-30 | 1964-03-31 | 1964-09-30 | $7700.00 | Window Closed / Lapsed |