US3525575A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Turbine
Assignee: Licentia Patent Verwaltungs GmbH
•
Filing: 1968-05-16
•
Granted: 1970-08-25
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Expires: 1988-05-16
Abstract
No abstract record available.
Inventors
- 👤 Karl Steinack
- 👤 Robert Ehrich
- 👤 Walter Zorner
- 👤 Jurgen Freyer
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 16:24
CPC Classifications
F; F01; F01D; F01D11/00; F01D11/001; F01D1/00; F01D1/02; F01D1/04; F01D5/00; F01D5/02; F01D5/06
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2367134A
Cited
US2786625A
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US2649315A
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US2823891A
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US2762559A
Cited
US3018085A
Cited
US3047268A
Cited
US3303997A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1973-08-24 | 1974-02-23 | 1974-08-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1977-08-24 | 1978-02-23 | 1978-08-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1981-08-24 | 1982-02-23 | 1982-08-25 | $7700.00 | Window Closed / Lapsed |