US2855143A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Multistage radial flow turbomachine
Assignee: Sulzer AG
•
Filing: 1955-02-09
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Granted: 1958-10-07
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Expires: 1975-02-09
Abstract
No abstract record available.
Inventors
- 👤 Schaer Franz
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 16:33
CPC Classifications
F; F04; F04D; F04D17/00; F04D17/08; F04D17/10; F04D17/12; F04D17/122; F04D1/00; F04D1/06
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
GB190525391A
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US1221822A
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US1037244A
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US1038200A
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GB343385A
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US2399046A
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US2741423A
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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) | 1961-10-06 | 1962-04-07 | 1962-10-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-10-06 | 1966-04-07 | 1966-10-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-10-06 | 1970-04-07 | 1970-10-07 | $7700.00 | Window Closed / Lapsed |