US2968499A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Shaft seal for hydrogen-cooled generator
Assignee: General Electric Co
•
Filing: 1957-07-16
•
Granted: 1961-01-17
•
Expires: 1977-07-16
Abstract
No abstract record available.
Inventors
- 👤 Lloyd P Grobel
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 12:50
CPC Classifications
H; H02; H02K; H02K5/00; H02K5/04; H02K5/12; H02K5/124; F; F16; F16J; F16J15/00; F16J15/16; F16J15/40; Y; Y10; Y10S; Y10S277/00; Y10S277/927
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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US980282A
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US2350753A
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US2650116A
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US2501304A
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US2636754A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1964-01-17 | 1964-07-18 | 1965-01-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1968-01-17 | 1968-07-18 | 1969-01-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1972-01-17 | 1972-07-18 | 1973-01-17 | $7700.00 | Window Closed / Lapsed |