Patent US2949540A successfully refreshed from Google Patents.
US2949540A
Expired / Lapsed
US
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Combination hydraulic turbine and electric generator
Assignee: Individual
•
Filing: 1957-06-27
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Granted: 1960-08-16
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Expires: 1977-06-27
Abstract
No abstract record available.
Inventors
- 👤 Mark M Clayton
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 05:27
CPC Classifications
H; H02; H02K; H02K7/00; H02K7/18; H02K7/1807; H02K7/1823; F; F03; F03B; F03B13/00; F03B13/08; F03B13/083; F03B15/00; Y; Y02; Y02E; Y02E10/00; Y02E10/20
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1129830A
Cited
US1485186A
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US1505853A
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US1448627A
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US1562556A
Cited
US1566872A
Cited
US2381250A
Cited
US2666149A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1963-08-16 | 1964-02-15 | 1964-08-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-08-16 | 1968-02-15 | 1968-08-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-08-16 | 1972-02-15 | 1972-08-16 | $7700.00 | Window Closed / Lapsed |