US2645944A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Power take-off system and apparatus
Assignee: CRICHTON Co
•
Filing: 1948-04-19
•
Granted: 1953-07-21
•
Expires: 1968-04-19
Abstract
No abstract record available.
Inventors
- 👤 Jr Andrew B Crichton
- 👤 Carl G Wennerstrom
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 18:29
CPC Classifications
E; E21; E21C; E21C31/00; E21C31/12; Y; Y10; Y10T; Y10T74/00; Y10T74/19; Y10T74/19642; Y10T74/19647; Y10T74/19651
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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GB191503250A
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US1199509A
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DE330888C
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US1650301A
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US1714899A
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US2065486A
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US2108367A
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US2150352A
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US2222614A
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US2278095A
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US2323135A
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1956-07-20 | 1957-01-19 | 1957-07-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1960-07-20 | 1961-01-19 | 1961-07-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1964-07-20 | 1965-01-19 | 1965-07-21 | $7700.00 | Window Closed / Lapsed |