US3022978A
Expired / Lapsed
US
⏱️ 0.0 years remaining
High pressure valve seat
Assignee: MAROTTA VALVE CORP
•
Filing: 1957-12-03
•
Granted: 1962-02-27
•
Expires: 1977-12-03
Abstract
No abstract record available.
Inventors
- 👤 Kowalski Slawomir
- 👤 John G Kenann
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 16:55
CPC Classifications
F; F16; F16K; F16K1/00; F16K1/32; F16K1/34; F16K1/42; G; G05; G05D; G05D16/00; G05D16/04; G05D16/10; Y; Y10; Y10T; Y10T29/00; Y10T29/49; Y10T29/49229; Y10T29/49298; Y10T29/49306
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US627473A
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US1374621A
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US1669651A
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US2348548A
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US2662348A
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US2703584A
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US2738159A
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US2780433A
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US2696967A
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US2819868A
Cited
US2924421A
Cited
US2930404A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1965-02-26 | 1965-08-28 | 1966-02-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1969-02-26 | 1969-08-28 | 1970-02-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1973-02-26 | 1973-08-28 | 1974-02-27 | $7700.00 | Window Closed / Lapsed |