US2773612A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Apparatus for loading and unloading trailers and the like onto and from platforms and the like
Assignee: Lukens Steel Co
•
Filing: 1953-06-30
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Granted: 1956-12-11
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Expires: 1973-06-30
Abstract
No abstract record available.
Inventors
- 👤 Russell A West
- 👤 Lewis W Edwards
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 23:36
CPC Classifications
B; B62; B62B; B62B3/00; B62B3/04; B62B3/06; B62B3/0612
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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US2061495A
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US2621811A
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US2647647A
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US2598151A
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US2621812A
Cited
US2667980A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1959-12-11 | 1960-06-11 | 1960-12-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1963-12-11 | 1964-06-11 | 1964-12-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1967-12-11 | 1968-06-11 | 1968-12-11 | $7700.00 | Window Closed / Lapsed |