Patent US2628060A successfully refreshed from Google Patents.
US2628060A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Rotary plug valve seat
Assignee: Parker Appliance Co
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Filing: 1945-05-15
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Granted: 1953-02-10
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Expires: 1965-05-15
Abstract
No abstract record available.
Inventors
- 👤 Helen M Parker
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 12:42
CPC Classifications
F; F16; F16K; F16K5/00; F16K5/08; F16K5/14; F16K5/18; F16K5/188; F16K41/00; F16K41/02; F16K41/04; F16K41/043; F16K41/046; F16K5/04; F16K5/0414; F16K5/0457; F16K5/0464
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2191232A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1956-02-10 | 1956-08-11 | 1957-02-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1960-02-10 | 1960-08-11 | 1961-02-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1964-02-10 | 1964-08-11 | 1965-02-10 | $7700.00 | Window Closed / Lapsed |