Patent US2830523A successfully refreshed from Google Patents.
US2830523A
Expired / Lapsed
US
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Valve device
Assignee: Individual
•
Filing: 1955-11-21
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Granted: 1958-04-15
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Expires: 1975-11-21
Abstract
No abstract record available.
Inventors
- 👤 Joseph G Vehige
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 20:57
CPC Classifications
B; B64; B64D; B64D13/00; F; F16; F16K; F16K1/00; F16K1/02; B64D2013/003
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1299586A
Cited
US1559057A
Cited
US2189502A
Cited
FR888359A
Cited
US2516805A
Cited
US2596869A
Cited
US2672806A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1961-04-14 | 1961-10-14 | 1962-04-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-04-14 | 1965-10-14 | 1966-04-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-04-14 | 1969-10-14 | 1970-04-15 | $7700.00 | Window Closed / Lapsed |