US3054458A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Variable pitch fan
Assignee: Individual
•
Filing: 1959-08-17
•
Granted: 1962-09-18
•
Expires: 1979-08-17
Abstract
No abstract record available.
Inventors
- 👤 Marsico Corrado
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 11:37
CPC Classifications
F; F04; F04D; F04D29/00; F04D29/26; F04D29/32; F04D29/34; F04D29/36; F04D29/362
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US606322A
Cited
FR964695A
Cited
FR550882A
Cited
US2440046A
Cited
US2295209A
Cited
FR887484A
Cited
US2316940A
Cited
US2456361A
Cited
US2465560A
Cited
FR942363A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1965-09-17 | 1966-03-19 | 1966-09-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1969-09-17 | 1970-03-19 | 1970-09-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1973-09-17 | 1974-03-19 | 1974-09-18 | $7700.00 | Window Closed / Lapsed |