US3524090A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Shaft couplings for mechanically and electrically connecting the rotor shaft of a turbogenerator with a separate shaft
Assignee: BBC Brown Boveri AG Germany
•
Filing: 1967-11-16
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Granted: 1970-08-11
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Expires: 1987-11-16
Abstract
No abstract record available.
Inventors
- 👤 Werner Sark
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 23:09
CPC Classifications
H; H01; H01R; H01R39/00; H01R39/02; H01R39/34; H02; H02K; H02K3/00; H02K3/46; H02K3/50; H02K3/51; H02K9/00
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1277783A
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US3371235A
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US3359438A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1973-08-10 | 1974-02-09 | 1974-08-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1977-08-10 | 1978-02-09 | 1978-08-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1981-08-10 | 1982-02-09 | 1982-08-11 | $7700.00 | Window Closed / Lapsed |