US3038307A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Counter-rotating turbine wheels and auxiliary bucket wheel control device
Assignee: Saurer AG
•
Filing: 1959-02-25
•
Granted: 1962-06-12
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Expires: 1979-02-25
Abstract
No abstract record available.
Inventors
- 👤 Oprecht Ulrich
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 12:25
CPC Classifications
F; F02; F02C; F02C3/00; F02C3/04; F02C3/06; F02C3/067; F01; F01D; F01D1/00; F01D1/24; F01D1/26
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1577618A
Cited
US2571172A
Cited
US2578015A
Cited
US2584555A
Cited
US2852912A
Cited
US2851906A
Cited
US2912824A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1965-06-11 | 1965-12-11 | 1966-06-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1969-06-11 | 1969-12-11 | 1970-06-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1973-06-11 | 1973-12-11 | 1974-06-12 | $7700.00 | Window Closed / Lapsed |