US3413819A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Flow rate control for a joule-thomson refrigerator
Assignee: Raytheon Co
•
Filing: 1966-05-09
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Granted: 1968-12-03
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Expires: 1986-05-09
Abstract
No abstract record available.
Inventors
- 👤 Hansen Siegfried
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 08:46
CPC Classifications
F; F17; F17C; F17C13/00; F17C13/02; F17C13/026; F25; F25B; F25B9/00; F25B9/02; F17C2205/00; F17C2205/03; F17C2205/0302; F17C2205/0323; F17C2205/0338; F17C2227/00; F17C2227/03; F17C2227/0337; F17C2227/0358; F17C2227/036; F17C2250/00; F17C2250/04; F17C2250/0404; F17C2250/0439; F17C2250/06; F17C2250/0605; F17C2250/0636; F25B2309/00; F25B2309/02; F25B2309/022
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2243334A
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US2577902A
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US2538861A
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US2587363A
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US2909908A
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US3257823A
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US3307370A
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1971-12-03 | 1972-06-03 | 1972-12-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1975-12-03 | 1976-06-03 | 1976-12-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1979-12-03 | 1980-06-03 | 1980-12-03 | $7700.00 | Window Closed / Lapsed |