Patent US2658356A successfully refreshed from Google Patents.
US2658356A
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Jet pump refrigeration system
Assignee: ULTRA MECHANISMS Inc
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Filing: 1951-07-05
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Granted: 1953-11-10
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Expires: 1971-07-05
Abstract
No abstract record available.
Inventors
- 👤 Ernest P Neumann
- 👤 Lustwerk Ferdinand
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 19:24
CPC Classifications
F; F25; F25B; F25B1/00; F25B1/06; F25B1/08; F25B7/00; F25D; F25D11/00; F25D11/02; F25D11/022
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) | 1956-11-09 | 1957-05-11 | 1957-11-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1960-11-09 | 1961-05-11 | 1961-11-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1964-11-09 | 1965-05-11 | 1965-11-10 | $7700.00 | Window Closed / Lapsed |