Patent DE627077C successfully refreshed from Google Patents.
Patent US1516668A successfully refreshed from Google Patents.
US1516668A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Windmill
Assignee: Individual
•
Filing: 1923-06-04
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Granted: 1924-11-25
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Expires: 1943-06-04
Abstract
No abstract record available.
Inventors
- 👤 Frederick R Burch
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 02:46
CPC Classifications
F; F03; F03D; F03D3/00; F03D3/06; F03D3/062; F03D3/066; F03D3/067; F05; F05B; F05B2240/00; F05B2240/20; F05B2240/21; F05B2240/211; F05B2240/218; F05B2240/221; F05B2240/30; F05B2240/31; F05B2240/312; F05B2240/3121; F05B2260/00; F05B2260/70; F05B2260/72; F05B2280/00; F05B2280/30; F05B2280/60; F05B2280/6001; F05B2280/6002; F05C; F05C2253/00; F05C2253/02; F05C2253/025; 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) | 1927-11-25 | 1928-05-26 | 1928-11-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1931-11-25 | 1932-05-26 | 1932-11-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1935-11-25 | 1936-05-26 | 1936-11-25 | $7700.00 | Window Closed / Lapsed |