US2588644A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Hydraulic power unit
Assignee: Detroit Harvester Co
•
Filing: 1947-09-29
•
Granted: 1952-03-11
•
Expires: 1967-09-29
Abstract
No abstract record available.
Inventors
- 👤 Stewart B Mcleod
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 08:41
CPC Classifications
F; F15; F15B; F15B1/00; F15B1/26; Y; Y10; Y10T; Y10T137/00; Y10T137/7722; Y10T137/7771; Y10T137/778; Y10T137/8593; Y10T137/85978; Y10T137/86035; Y10T137/86043
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1409116A
Cited
US1942064A
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US2071605A
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US2107760A
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US2122045A
Cited
US2388755A
Cited
US2330006A
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US2393406A
Cited
US2383153A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1955-03-11 | 1955-09-10 | 1956-03-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1959-03-11 | 1959-09-10 | 1960-03-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1963-03-11 | 1963-09-10 | 1964-03-11 | $7700.00 | Window Closed / Lapsed |