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US2638232A
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US
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Truck crane
Assignee: Harnischfeger Corp
•
Filing: 1946-04-08
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Granted: 1953-05-12
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Expires: 1966-04-08
Abstract
No abstract record available.
Inventors
- 👤 William J Perkins
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 14:52
CPC Classifications
B; B66; B66C; B66C23/00; B66C23/62
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1408263A
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US2083460A
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US2157376A
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US2254083A
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US2343800A
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US2328606A
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US2383172A
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US2465508A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1956-05-11 | 1956-11-10 | 1957-05-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1960-05-11 | 1960-11-10 | 1961-05-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1964-05-11 | 1964-11-10 | 1965-05-12 | $7700.00 | Window Closed / Lapsed |