Patent US2653679A successfully refreshed from Google Patents.
US2653679A
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US
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Automatic leveling mechanism for hoisting trucks
Assignee: Individual
•
Filing: 1951-10-23
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Granted: 1953-09-29
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Expires: 1971-10-23
Abstract
No abstract record available.
Inventors
- 👤 Jr Arthur S Hamilton
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 18:56
CPC Classifications
B; B66; B66F; B66F9/00; B66F9/06; B66F9/075; B66F9/0755; B66F9/02; B66F9/08; Y; Y10; Y10S; Y10S414/00; Y10S414/10; Y10S414/102; Y10S414/103; Y10S414/105
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1956-09-28 | 1957-03-30 | 1957-09-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1960-09-28 | 1961-03-30 | 1961-09-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1964-09-28 | 1965-03-30 | 1965-09-29 | $7700.00 | Window Closed / Lapsed |