Patent US2818082A successfully refreshed from Google Patents.
US2818082A
Expired / Lapsed
US
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Positive release couple and valve
Assignee: Mcdowell Manufacturing Co
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Filing: 1954-09-10
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Granted: 1957-12-31
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Expires: 1974-09-10
Abstract
No abstract record available.
Inventors
- 👤 Clyde E Rickard
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 10:12
CPC Classifications
F; F16; F16L; F16L37/00; F16L37/28; F16L37/38; F16L37/44; F16L37/08; F16L37/084; Y; Y10; Y10T; Y10T137/00; Y10T137/598; Y10T137/612; Y10T137/613; Y10T137/6133
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1455406A
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US2259453A
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US2479960A
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US2635901A
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US2587810A
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US2589321A
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US2709092A
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US2768642A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1960-12-30 | 1961-07-01 | 1961-12-31 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1964-12-30 | 1965-07-01 | 1965-12-31 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1968-12-30 | 1969-07-01 | 1969-12-31 | $7700.00 | Window Closed / Lapsed |