US2540859A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Tank truck assembly of detachable wheel supported units
Assignee: Sinclair Refining Co
•
Filing: 1944-12-01
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Granted: 1951-02-06
•
Expires: 1964-12-01
Abstract
No abstract record available.
Inventors
- 👤 Kenneth W Birkin
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 16:15
CPC Classifications
B; B60; B60P; B60P3/00; B60P3/22; B60P3/2205; B60P3/2225; Y; Y10; Y10T; Y10T29/00; Y10T29/49; Y10T29/49616; Y10T29/49622; Y10T29/49716; Y10T29/49826; Y10T29/49904
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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US1953515A
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US2195509A
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US2105302A
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US2097113A
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US2185030A
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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) | 1954-02-05 | 1954-08-07 | 1955-02-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1958-02-05 | 1958-08-07 | 1959-02-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1962-02-05 | 1962-08-07 | 1963-02-06 | $7700.00 | Window Closed / Lapsed |