US2470087A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Expansible chamber hydraulic motor with distributing valve in piston
Assignee: Denison Engineering Co
•
Filing: 1944-12-14
•
Granted: 1949-05-17
•
Expires: 1964-12-14
Abstract
No abstract record available.
Inventors
- 👤 Cecil E Adams
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 15:50
CPC Classifications
B; B21; B21J; B21J15/00; B21J15/10; B21J15/16; B21J15/20; F; F15; F15B; F15B11/00; F15B11/08; F15B11/15
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US397958A
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US606844A
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US897346A
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US1031340A
Cited
US1058718A
Cited
US1142551A
Cited
US2276783A
Cited
US2348243A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1952-05-16 | 1952-11-15 | 1953-05-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1956-05-16 | 1956-11-15 | 1957-05-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1960-05-16 | 1960-11-15 | 1961-05-17 | $7700.00 | Window Closed / Lapsed |