US3386346A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Controlled leakage piston ring assembly
Assignee: Studebaker Worthington Inc
•
Filing: 1966-04-15
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Granted: 1968-06-04
•
Expires: 1986-04-15
Abstract
No abstract record available.
Inventors
- 👤 Martin J Halpin
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 05:06
CPC Classifications
F; F16; F16J; F16J9/00; F04; F04B; F04B39/00; F04B39/04; F04B39/041; F04B39/042; F16J15/00; F16J15/002; F16J15/006
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1166644A
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US1646143A
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US1770034A
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US1808057A
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US1984409A
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US1988727A
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US2260031A
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US3149543A
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1971-06-04 | 1971-12-04 | 1972-06-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1975-06-04 | 1975-12-04 | 1976-06-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1979-06-04 | 1979-12-04 | 1980-06-04 | $7700.00 | Window Closed / Lapsed |