US2598271A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Servomotor with lubricated rotatable piston rod
Assignee: Individual
•
Filing: 1947-01-08
•
Granted: 1952-05-27
•
Expires: 1967-01-08
Abstract
No abstract record available.
Inventors
- 👤 Francis E Klosterman
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 22:35
CPC Classifications
F; F15; F15B; F15B15/00; F15B15/08; F15B15/14; F15B15/1423; F15B15/1457; F15B15/1447; F16; F16J; F16J1/00; F16J1/10
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1296735A
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US1074280A
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GB226589A
Cited
US1613090A
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US1804002A
Cited
DE574901C
Cited
US2272620A
Cited
US2296145A
Cited
US2376576A
Cited
US2393410A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1955-05-27 | 1955-11-26 | 1956-05-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1959-05-27 | 1959-11-26 | 1960-05-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1963-05-27 | 1963-11-26 | 1964-05-27 | $7700.00 | Window Closed / Lapsed |