Patent US2943642A successfully refreshed from Google Patents.
US2943642A
Expired / Lapsed
US
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Liquid spring accumulator
Assignee: Cleveland Pneumatic Industries Inc
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Filing: 1958-07-07
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Granted: 1960-07-05
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Expires: 1978-07-07
Abstract
No abstract record available.
Inventors
- 👤 Jr William B Westcott
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 13:17
CPC Classifications
F; F15; F15B; F15B1/00; F15B1/02; F15B1/04; F16; F16F; F16F5/00; F15B2201/00; F15B2201/20; F15B2201/30; F15B2201/31; F15B2201/312; F15B2201/40; F15B2201/41; F15B2201/411; F15B2201/413
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1963-07-05 | 1964-01-04 | 1964-07-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-07-05 | 1968-01-04 | 1968-07-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-07-05 | 1972-01-04 | 1972-07-05 | $7700.00 | Window Closed / Lapsed |