US2900127A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Axial flow fan with variable direction of oscillating range
Assignee: AC Gilbert Co
•
Filing: 1955-02-10
•
Granted: 1959-08-18
•
Expires: 1975-02-10
Abstract
No abstract record available.
Inventors
- 👤 Raymond E Smith
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 23:19
CPC Classifications
F; F04; F04D; F04D25/00; F04D25/02; F04D25/08; F04D25/10; F04D25/105; Y; Y10; Y10T; Y10T74/00; Y10T74/18; Y10T74/18056; Y10T74/18184
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US479425A
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US708622A
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US1289412A
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US2041921A
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US2551789A
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US2746673A
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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) | 1962-08-17 | 1963-02-16 | 1963-08-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-08-17 | 1967-02-16 | 1967-08-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-08-17 | 1971-02-16 | 1971-08-18 | $7700.00 | Window Closed / Lapsed |