Patent DE217959C successfully refreshed from Google Patents.
US2875979A
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US
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Hydroelectric turbo-generator installation
Assignee: Neyrpic SA
•
Filing: 1953-09-04
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Granted: 1959-03-03
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Expires: 1973-09-04
Abstract
No abstract record available.
Inventors
- 👤 Pierre F Danel
- 👤 Severin X Casacci
- 👤 Jarrian Paul
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 23:08
CPC Classifications
F; F03; F03B; F03B3/00; F03B3/16; F03B3/18; F03B3/183; F05; F05B; F05B2210/00; F05B2210/40; F05B2210/403; Y; Y02; Y02E; Y02E10/00; Y02E10/20
Claims Analysis
Total Claims: 0
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1962-03-02 | 1962-09-01 | 1963-03-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-03-02 | 1966-09-01 | 1967-03-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-03-02 | 1970-09-01 | 1971-03-03 | $7700.00 | Window Closed / Lapsed |