Patent US5271473A successfully refreshed from Google Patents.
US3070022A
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Liquid nitrogen pump
Assignee: THOMPSON RAMO WOOLDRDGE Inc
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Filing: 1957-10-02
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Granted: 1962-12-25
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Expires: 1977-10-02
Abstract
No abstract record available.
Inventors
- 👤 Alex A Mccormack
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 15:54
CPC Classifications
F; F04; F04B; F04B9/00; F04B9/08; F04B9/12; F04B9/123; F04B9/127; F01; F01L; F01L23/00; F04B15/00; F04B15/06; F04B15/08; F04B53/00; F04B53/10; F04B53/1037; F04B53/1047; F04B53/105; F04B53/14; F04B53/141; Y; Y10; Y10S; Y10S417/00; Y10S417/901
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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US2235544A
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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) | 1965-12-24 | 1966-06-25 | 1966-12-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1969-12-24 | 1970-06-25 | 1970-12-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1973-12-24 | 1974-06-25 | 1974-12-25 | $7700.00 | Window Closed / Lapsed |