Patent US3041709A successfully refreshed from Google Patents.
US3041709A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Manufacture of blower wheels
Assignee: Air Controls Inc
•
Filing: 1956-04-23
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Granted: 1962-07-03
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Expires: 1976-04-23
Abstract
No abstract record available.
Inventors
- 👤 Arthur E Friedman
- 👤 Emmett F Kennedy
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 12:18
CPC Classifications
F; F04; F04D; F04D29/00; F04D29/26; F04D29/28; F04D29/281; F04D29/282; F04D29/283; Y; Y10; Y10T; Y10T29/00; Y10T29/49; Y10T29/49316; Y10T29/49329
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2080593A
Cited
US2242586A
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US2195869A
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US2291480A
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US2315407A
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US2684521A
Cited
US2771241A
Cited
US2833464A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1965-07-02 | 1966-01-01 | 1966-07-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1969-07-02 | 1970-01-01 | 1970-07-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1973-07-02 | 1974-01-01 | 1974-07-03 | $7700.00 | Window Closed / Lapsed |