Patent US2637522A successfully refreshed from Google Patents.
US2637522A
Expired / Lapsed
US
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Vehicle hoisting apparatus
Assignee: WALCO Inc
•
Filing: 1948-08-19
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Granted: 1953-05-05
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Expires: 1968-08-19
Abstract
No abstract record available.
Inventors
- 👤 David A Wallace
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 03:06
CPC Classifications
B; B66; B66F; B66F7/00; B66F7/10; B66F7/16
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1784554A
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US1896715A
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US2015357A
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US2045173A
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US2012430A
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US2158399A
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US2423954A
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US2458986A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1956-05-04 | 1956-11-03 | 1957-05-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1960-05-04 | 1960-11-03 | 1961-05-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1964-05-04 | 1964-11-03 | 1965-05-05 | $7700.00 | Window Closed / Lapsed |