Patent US1973509A successfully refreshed from Google Patents.
US1973509A
Expired / Lapsed
US
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Expansive fluid turbine
Assignee: Individual
•
Filing: 1932-01-08
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Granted: 1934-09-11
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Expires: 1952-01-08
Abstract
No abstract record available.
Inventors
- 👤 Antonio V Santarsiero
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 04:35
CPC Classifications
F; F03; F03D; F03D3/00; F03D3/04; F03D3/0436; F03D3/0427; F05; F05B; F05B2240/00; F05B2240/20; F05B2240/21; F05B2240/221; F05B2240/2212; F05B2240/90; F05B2240/92; F05B2240/923; Y; Y02; Y02E; Y02E10/00; Y02E10/70; Y02E10/74
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1937-09-10 | 1938-03-12 | 1938-09-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1941-09-10 | 1942-03-12 | 1942-09-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1945-09-10 | 1946-03-12 | 1946-09-11 | $7700.00 | Window Closed / Lapsed |