US2708883A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Arrangement for use in radial centrifugal compressors and pumps for the conversion of kinetic energy of the flowing medium into pressure energy
Assignee: Sulzer Escher Wyss AG
•
Filing: 1951-02-23
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Granted: 1955-05-24
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Expires: 1971-02-23
Abstract
No abstract record available.
Inventors
- 👤 Keller Curt
- 👤 Salzmann Fritz
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 13:34
CPC Classifications
F; F04; F04D; F04D29/00; F04D29/40; F04D29/42; F04D29/44; F04D29/441; F04D29/444; F04D29/445; F04D29/448; F05; F05D; F05D2250/00; F05D2250/50; F05D2250/52
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US958765A
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US984189A
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GB170815A
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GB273804A
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GB336840A
Cited
US1917029A
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DE709266C
Cited
US2311024A
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GB604378A
Cited
GB627072A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1958-05-23 | 1958-11-22 | 1959-05-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1962-05-23 | 1962-11-22 | 1963-05-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1966-05-23 | 1966-11-22 | 1967-05-24 | $7700.00 | Window Closed / Lapsed |