US2680016A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Power unit
Assignee: Detroit Harvester Co
•
Filing: 1950-12-15
•
Granted: 1954-06-01
•
Expires: 1970-12-15
Abstract
No abstract record available.
Inventors
- 👤 Stewart B Mcleod
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 23:04
CPC Classifications
E; E05; E05F; E05F15/00; E05F15/50; E05F15/57; E05Y; E05Y2900/00; E05Y2900/50; E05Y2900/53; E05Y2900/55; Y; Y10; Y10S; Y10S60/00; Y10S60/903; Y10T; Y10T137/00; Y10T137/2496; Y10T137/2559; Y10T137/2564; Y10T137/2567
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1307839A
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GB189800781A
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US776061A
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US1409116A
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US2122045A
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US2301576A
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US2282977A
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US2388755A
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US2437115A
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US2412428A
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US2475304A
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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) | 1957-05-31 | 1957-11-30 | 1958-06-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1961-05-31 | 1961-11-30 | 1962-06-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1965-05-31 | 1965-11-30 | 1966-06-01 | $7700.00 | Window Closed / Lapsed |