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US2698030A
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Valve mechanism
Assignee: Joy Manufacturing Co
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Filing: 1949-07-27
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Granted: 1954-12-28
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Expires: 1969-07-27
Abstract
No abstract record available.
Inventors
- 👤 Ray A Lehner
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 08:48
CPC Classifications
F; F16; F16H; F16H61/00; F16H61/38; F16H61/40; Y; Y10; Y10T; Y10T137/00; Y10T137/8593; Y10T137/86493; Y10T137/86718; Y10T137/86759; Y10T137/86791; Y10T137/86799
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US546589A
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US690611A
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US1172833A
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US1292013A
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US1873769A
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US2121936A
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US2247140A
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US2365095A
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US2531511A
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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) | 1957-12-27 | 1958-06-28 | 1958-12-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1961-12-27 | 1962-06-28 | 1962-12-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1965-12-27 | 1966-06-28 | 1966-12-28 | $7700.00 | Window Closed / Lapsed |