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Patent US2684079A successfully refreshed from Google Patents.
US2684079A
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Fluid control valve
Assignee: Productive Inventions Inc
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Filing: 1950-05-12
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Granted: 1954-07-20
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Expires: 1970-05-12
Abstract
No abstract record available.
Inventors
- 👤 Fred A Krohm
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 15:20
CPC Classifications
G; G05; G05D; G05D7/00; G05D7/01; G05D7/0173; Y; Y10; Y10T; Y10T137/00; Y10T137/7722; Y10T137/7771; Y10T137/778; Y10T137/7837; Y10T137/7879; Y10T137/7888; Y10T137/7891; Y10T137/7892
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US501437A
Cited
US1619238A
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FR706982A
Cited
US1905065A
Cited
US1920068A
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US2025626A
Cited
FR801926A
Cited
US2567391A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1957-07-19 | 1958-01-18 | 1958-07-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1961-07-19 | 1962-01-18 | 1962-07-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1965-07-19 | 1966-01-18 | 1966-07-20 | $7700.00 | Window Closed / Lapsed |