US2640426A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Power unit of the pressure fluid type
Assignee: Detroit Harvester Co
•
Filing: 1951-04-16
•
Granted: 1953-06-02
•
Expires: 1971-04-16
Abstract
No abstract record available.
Inventors
- 👤 Stewart B Mcleod
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 18:03
CPC Classifications
F; F15; F15B; F15B15/00; F15B15/18; Y; Y10; Y10T; Y10T137/00; Y10T137/2496
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1078127A
Cited
US1182587A
Cited
US2143546A
Cited
US2322314A
Cited
US2324635A
Cited
US2257245A
Cited
US2388755A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1956-06-01 | 1956-12-01 | 1957-06-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1960-06-01 | 1960-12-01 | 1961-06-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1964-06-01 | 1964-12-01 | 1965-06-02 | $7700.00 | Window Closed / Lapsed |