Patent US2686090A successfully refreshed from Google Patents.
US2686090A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Renewable sleeve liner for pumps
Assignee: Individual
•
Filing: 1951-02-23
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Granted: 1954-08-10
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Expires: 1971-02-23
Abstract
No abstract record available.
Inventors
- 👤 Arthur L Leman
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 09:40
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)
US1510042A
Cited
US1496247A
Cited
US1730905A
Cited
US2447027A
Cited
US2412587A
Cited
US2530246A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1957-08-09 | 1958-02-08 | 1958-08-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1961-08-09 | 1962-02-08 | 1962-08-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1965-08-09 | 1966-02-08 | 1966-08-10 | $7700.00 | Window Closed / Lapsed |