US2993543A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Multiple-area hydraulic motor
Assignee: RTX Corp
•
Filing: 1957-07-30
•
Granted: 1961-07-25
•
Expires: 1977-07-30
Abstract
No abstract record available.
Inventors
- 👤 Jr Arthur N Allen
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 03:36
CPC Classifications
B; B64; B64C; B64C11/00; B64C11/30; B64C11/38; B64C11/385; B64C11/40
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US446799A
Cited
GB629540A
Cited
US2515037A
Cited
US2588166A
Cited
US2502547A
Cited
US2661599A
Cited
US2694942A
Cited
US2756608A
Cited
US2792064A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1964-07-24 | 1965-01-23 | 1965-07-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1968-07-24 | 1969-01-23 | 1969-07-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1972-07-24 | 1973-01-23 | 1973-07-25 | $7700.00 | Window Closed / Lapsed |