Patent US2970806A successfully refreshed from Google Patents.
US2970806A
Expired / Lapsed
US
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Balanced governing valve with minimum reaction gradients
Assignee: General Electric Co
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Filing: 1960-01-21
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Granted: 1961-02-07
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Expires: 1980-01-21
Abstract
No abstract record available.
Inventors
- 👤 Donald L Rexford
- 👤 Herbert N Hoffman
- 👤 Jacobs Stephen
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 10:39
CPC Classifications
F; F16; F16K; F16K39/00; F16K39/02; Y; Y10; Y10T; Y10T137/00; Y10T137/8593; Y10T137/87917; Y10T137/88062
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) | 1964-02-07 | 1964-08-08 | 1965-02-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1968-02-07 | 1968-08-08 | 1969-02-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1972-02-07 | 1972-08-08 | 1973-02-07 | $7700.00 | Window Closed / Lapsed |