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US2860018A
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US
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Piston assembly
Assignee: Joy Manufacturing Co
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Filing: 1957-01-10
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Granted: 1958-11-11
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Expires: 1977-01-10
Abstract
No abstract record available.
Inventors
- 👤 Eugene J Doperalski
- 👤 Kodra Esper
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 12:21
CPC Classifications
F; F04; F04B; F04B39/00; F04B39/04; F04B39/041; F04B39/042; F16; F16J; F16J9/00; F16J9/28
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1600961A
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US2092087A
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US2111377A
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US2157155A
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US2683113A
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US2696414A
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US2755239A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1961-11-10 | 1962-05-12 | 1962-11-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-11-10 | 1966-05-12 | 1966-11-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-11-10 | 1970-05-12 | 1970-11-11 | $7700.00 | Window Closed / Lapsed |