US2555576A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Axial flow fan
Assignee: Buffalo Forge Co
•
Filing: 1946-05-07
•
Granted: 1951-06-05
•
Expires: 1966-05-07
Abstract
No abstract record available.
Inventors
- 👤 Albert E Criqui
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 03:53
CPC Classifications
F; F04; F04D; F04D29/00; F04D29/66; F04D29/68; F04D29/681; F04D19/00; F04D19/002; F04D29/682; F04D29/684; Y; Y10; Y10S; Y10S415/00; Y10S415/914; Y10T; Y10T137/00; Y10T137/8593; Y10T137/87265; Y10T137/87539
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1691942A
Cited
US2084462A
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US2041792A
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US2153576A
Cited
GB504214A
Cited
US2314572A
Cited
US2209121A
Cited
US2314696A
Cited
US2294586A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1954-06-04 | 1954-12-04 | 1955-06-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1958-06-04 | 1958-12-04 | 1959-06-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1962-06-04 | 1962-12-04 | 1963-06-05 | $7700.00 | Window Closed / Lapsed |