Patent US2409439A successfully refreshed from Google Patents.
US2409439A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Wind power plant
Assignee: Individual
•
Filing: 1944-09-19
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Granted: 1946-10-15
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Expires: 1964-09-19
Abstract
No abstract record available.
Inventors
- 👤 Thomas E Law
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 07:09
CPC Classifications
F; F03; F03D; F03D3/00; F03D3/04; F03D3/0436; F05; F05B; F05B2240/00; F05B2240/20; F05B2240/21; F05B2240/221; F05B2240/2212; 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) | 1949-10-14 | 1950-04-15 | 1950-10-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1953-10-14 | 1954-04-15 | 1954-10-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1957-10-14 | 1958-04-15 | 1958-10-15 | $7700.00 | Window Closed / Lapsed |