Patent US3497736A successfully refreshed from Google Patents.
US3497736A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Turbogenerator with directly liquid-cooling rotor winding
Assignee: BBC Brown Boveri AG Germany
•
Filing: 1967-10-05
•
Granted: 1970-02-24
•
Expires: 1987-10-05
Abstract
No abstract record available.
Inventors
- 👤 Robert Cuny
- 👤 Rolf-Dieter Kranz
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 19:18
CPC Classifications
H; H02; H02K; H02K9/00
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
US3034003A
Cited
US3131321A
Cited
US3243616A
Cited
US3320447A
Cited
US3267868A
Cited
US3393333A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1973-02-23 | 1973-08-25 | 1974-02-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1977-02-23 | 1977-08-25 | 1978-02-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1981-02-23 | 1981-08-25 | 1982-02-24 | $7700.00 | Window Closed / Lapsed |