US2635582A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Manual control device with power booster
Assignee: Thew Shovel Co
•
Filing: 1950-01-17
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Granted: 1953-04-21
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Expires: 1970-01-17
Abstract
No abstract record available.
Inventors
- 👤 Roy H Zeilman
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 18:52
CPC Classifications
F; F15; F15B; F15B13/00; F15B13/14; B; B66; B66C; B66C13/00; B66C13/52; B66C13/54; B66C13/56
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1385658A
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US1365347A
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US1765069A
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US1824296A
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US1928915A
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GB397274A
Cited
US2138148A
Cited
US2360542A
Cited
US2380705A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1956-04-20 | 1956-10-20 | 1957-04-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1960-04-20 | 1960-10-20 | 1961-04-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1964-04-20 | 1964-10-20 | 1965-04-21 | $7700.00 | Window Closed / Lapsed |