US3457730A
Expired / Lapsed
US
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Throttling valve employing the joule-thomson effect
Assignee: Raytheon Co
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Filing: 1967-10-02
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Granted: 1969-07-29
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Expires: 1987-10-02
Abstract
No abstract record available.
Inventors
- 👤 Robert L Berry
- 👤 Anthony L Vodopia
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 08:46
CPC Classifications
F; F25; F25J; F25J1/00; F25J1/02; F25J1/0243; F25J1/0257; F25J1/0275; F25J1/0276; F25B; F25B9/00; F25B9/02; G; G05; G05D; G05D23/00; G05D23/01; G05D23/02; G05D23/024; F25B2309/00; F25B2309/02; F25B2309/022; F25J2290/00; F25J2290/42
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) | 1972-07-28 | 1973-01-27 | 1973-07-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-07-28 | 1977-01-27 | 1977-07-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-07-28 | 1981-01-27 | 1981-07-29 | $7700.00 | Window Closed / Lapsed |