US2667898A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Regulating valve
Assignee: WILLIAM J SCARLETT
•
Filing: 1947-07-30
•
Granted: 1954-02-02
•
Expires: 1967-07-30
Abstract
No abstract record available.
Inventors
- 👤 Eichmann Theophil
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 16:19
CPC Classifications
F; F25; F25B; F25B41/00; F25B41/30; F25B41/31; F25B41/33; F25B41/335; Y; Y10; Y10T; Y10T137/00; Y10T137/7722; Y10T137/7737
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US123317A
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US1313858A
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FR609942A
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US1935548A
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US1803659A
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US1885389A
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GB383446A
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US2021053A
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GB538235A
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US2338760A
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CH253080A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1957-02-01 | 1957-08-03 | 1958-02-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1961-02-01 | 1961-08-03 | 1962-02-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1965-02-01 | 1965-08-03 | 1966-02-02 | $7700.00 | Window Closed / Lapsed |