US3390525A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Shaft-sealing device for turbomachines having a gaseous working medium heated in a nuclear reactor
Assignee: Sulzer Escher Wyss AG
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Filing: 1966-12-27
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Granted: 1968-07-02
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Expires: 1986-12-27
Abstract
No abstract record available.
Inventors
- 👤 Spillmann Werner
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 18:27
CPC Classifications
F; F16; F16J; F16J15/00; F16J15/16; F16J15/40; F01; F01D; F01D11/00; F01D11/02; F01D11/04; F01D11/06; G; G21; G21D; G21D1/00; G21D1/02; G21D5/00; G21D5/04; G21D5/06; F05; F05D; F05D2240/00; F05D2240/60; F05D2240/63; Y; Y02; Y02E; Y02E30/00; Y02E30/30
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) | 1971-07-02 | 1972-01-01 | 1972-07-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1975-07-02 | 1976-01-01 | 1976-07-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1979-07-02 | 1980-01-01 | 1980-07-02 | $7700.00 | Window Closed / Lapsed |