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Patent US2865597A successfully refreshed from Google Patents.
US2865597A
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Leakproof pressure sealed valves
Assignee: Individual
•
Filing: 1953-07-21
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Granted: 1958-12-23
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Expires: 1973-07-21
Abstract
No abstract record available.
Inventors
- 👤 Joseph E Lucas
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 15:28
CPC Classifications
F; F16; F16K; F16K3/00; F16K3/28; F16K3/02; F16K3/12
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2734715A
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US2734714A
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US1004845A
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US1476862A
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US2194256A
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US2238357A
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US2229871A
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US2567032A
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US2552991A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1961-12-22 | 1962-06-23 | 1962-12-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-12-22 | 1966-06-23 | 1966-12-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-12-22 | 1970-06-23 | 1970-12-23 | $7700.00 | Window Closed / Lapsed |