US2813401A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Filler valve construction
Assignee: Fisher Governor Co
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Filing: 1954-12-13
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Granted: 1957-11-19
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Expires: 1974-12-13
Abstract
No abstract record available.
Inventors
- 👤 Peter A Smith
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 07:26
CPC Classifications
F; F17; F17B; F17B1/00; F17B1/02; F17B1/12; F16; F16K; F16K15/00; F16K15/02; F16K15/03; F16K15/033; F16K15/035; Y; Y10; Y10T; Y10T137/00; Y10T137/2496; Y10T137/2559; Y10T137/2574; Y10T137/2579; Y10T137/2602; Y10T137/7722; Y10T137/7771; Y10T137/7778; Y10T137/7837; Y10T137/7838; Y10T137/7842; Y10T137/7898
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1960-11-18 | 1961-05-20 | 1961-11-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1964-11-18 | 1965-05-20 | 1965-11-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1968-11-18 | 1969-05-20 | 1969-11-19 | $7700.00 | Window Closed / Lapsed |