Patent US2730400A successfully refreshed from Google Patents.
US2730400A
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US
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Pivotal track vehicle carrying trailer and method of loading same
Assignee: DUAL MOTORS TRUCK Co
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Filing: 1952-02-04
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Granted: 1956-01-10
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Expires: 1972-02-04
Abstract
No abstract record available.
Inventors
- 👤 Lynn M Francis
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 16:01
CPC Classifications
B; B60; B60P; B60P3/00; B60P3/06; B60P3/08
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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US1824370A
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US1887325A
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US1840705A
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US1901103A
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US2009149A
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US2146567A
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US2452270A
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US2492980A
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US2636772A
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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) | 1959-01-09 | 1959-07-11 | 1960-01-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1963-01-09 | 1963-07-11 | 1964-01-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1967-01-09 | 1967-07-11 | 1968-01-10 | $7700.00 | Window Closed / Lapsed |