US2698128A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Axial flow fan
Assignee: Joy Manufacturing Co
•
Filing: 1948-12-28
•
Granted: 1954-12-28
•
Expires: 1968-12-28
Abstract
No abstract record available.
Inventors
- 👤 James R Ault
- 👤 Chester P Jenkins
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 02:32
CPC Classifications
F; F04; F04D; F04D29/00; F04D29/40; F04D29/52; F04D29/522; F04D29/526
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1957-12-27 | 1958-06-28 | 1958-12-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1961-12-27 | 1962-06-28 | 1962-12-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1965-12-27 | 1966-06-28 | 1966-12-28 | $7700.00 | Window Closed / Lapsed |