US2640434A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Cylinder liner and sleeve assembly for reciprocating pumps
Assignee: Individual
•
Filing: 1949-06-02
•
Granted: 1953-06-02
•
Expires: 1969-06-02
Abstract
No abstract record available.
Inventors
- 👤 Arthur L Leman
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 16:06
CPC Classifications
F; F04; F04B; F04B53/00; F04B53/16; F04B53/162; F04B53/166; F04B53/168
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US968029A
Cited
US1592266A
Cited
US1804542A
Cited
US1768799A
Cited
US1792941A
Cited
US2259432A
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 |