US3028072A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Air impelling fan and associated part
Assignee: Madison Management Group Inc
•
Filing: 1958-05-05
•
Granted: 1962-04-03
•
Expires: 1978-05-05
Abstract
No abstract record available.
Inventors
- 👤 Anwar A Atalla
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 06:03
CPC Classifications
F; F04; F04D; F04D29/00; F04D29/26; F04D29/32; F04D29/325; F04D29/326; F04D29/40; F04D29/52; F04D29/54; F04D29/541; F04D29/545; F04D29/547
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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US2503072A
Cited
US2613514A
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US2811023A
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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) | 1965-04-02 | 1965-10-02 | 1966-04-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1969-04-02 | 1969-10-02 | 1970-04-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1973-04-02 | 1973-10-02 | 1974-04-03 | $7700.00 | Window Closed / Lapsed |