Patent US3180945A successfully refreshed from Google Patents.
US2811179A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Tank car loader
Assignee: Individual
•
Filing: 1954-05-07
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Granted: 1957-10-29
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Expires: 1974-05-07
Abstract
No abstract record available.
Inventors
- 👤 Dolphice H Greenwood
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 18:50
CPC Classifications
B; B67; B67D; B67D7/00; B67D7/06; B67D7/36; B67D7/362; B67D7/365
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US408911A
Cited
US916425A
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US1083183A
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US1746814A
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US1881106A
Cited
GB367798A
Cited
US2329426A
Cited
US2326415A
Cited
US2503295A
Cited
US2507545A
Cited
US2658653A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1960-10-28 | 1961-04-29 | 1961-10-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1964-10-28 | 1965-04-29 | 1965-10-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1968-10-28 | 1969-04-29 | 1969-10-29 | $7700.00 | Window Closed / Lapsed |