US2603493A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Automatically vented liquid flow regulating valve
Assignee: Individual
•
Filing: 1950-02-06
•
Granted: 1952-07-15
•
Expires: 1970-02-06
Abstract
No abstract record available.
Inventors
- 👤 Carlo F Rusconi
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 09:10
CPC Classifications
F; F16; F16K; F16K24/00; F16K24/04; F16K24/042; F16K24/044; F16K24/046; Y; Y10; Y10T; Y10T137/00; Y10T137/2931; Y10T137/3003; Y10T137/3084; Y10T137/309; Y10T137/3099; Y10T137/7287; Y10T137/7358; Y10T137/7423
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US195342A
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US685169A
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US785594A
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US924641A
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US1674074A
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US1689990A
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US1875857A
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US2175728A
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US2393078A
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US2388481A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1955-07-15 | 1956-01-14 | 1956-07-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1959-07-15 | 1960-01-14 | 1960-07-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1963-07-15 | 1964-01-14 | 1964-07-15 | $7700.00 | Window Closed / Lapsed |