Patent US3195903A successfully refreshed from Google Patents.
US3195903A
Expired / Lapsed
US
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Piston oil control ring
Assignee: SPX Technologies Inc
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Filing: 1962-02-05
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Granted: 1965-07-20
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Expires: 1982-02-05
Abstract
No abstract record available.
Inventors
- 👤 Donald M Hesling
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 20:17
CPC Classifications
F; F16; F16J; F16J9/00; F16J9/12; F16J9/20; F16J9/203; F16J9/06; F16J9/061; F16J9/062; F16J9/063
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1782426A
Cited
US1999494A
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US2080898A
Cited
US2124094A
Cited
US2372979A
Cited
US2668088A
Cited
US3066943A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1968-07-19 | 1969-01-18 | 1969-07-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-07-19 | 1973-01-18 | 1973-07-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-07-19 | 1977-01-18 | 1977-07-20 | $7700.00 | Window Closed / Lapsed |