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US2786590A
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Apparatus for loading and unloading trailers
Assignee: Lukens Steel Co
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Filing: 1953-11-17
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Granted: 1957-03-26
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Expires: 1973-11-17
Abstract
No abstract record available.
Inventors
- 👤 Lewis W Edwards
- 👤 Russell A West
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 17:55
CPC Classifications
B; B60; B60P; B60P3/00; B60P3/06; B60P3/07
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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US2317508A
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Cited
US2635430A
Cited
US2621814A
Cited
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Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1960-03-25 | 1960-09-24 | 1961-03-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1964-03-25 | 1964-09-24 | 1965-03-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1968-03-25 | 1968-09-24 | 1969-03-26 | $7700.00 | Window Closed / Lapsed |