US2915240A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Blower wheel construction
Assignee: Revcor Inc
•
Filing: 1956-09-26
•
Granted: 1959-12-01
•
Expires: 1976-09-26
Abstract
No abstract record available.
Inventors
- 👤 Joseph F Kochevar
- 👤 John H Reichwein
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 00:57
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)
US1310864A
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US1023873A
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GB225640A
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US1637652A
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US1876518A
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US1890226A
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US2231063A
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US2209028A
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US2496179A
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GB623149A
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US2654529A
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US2673390A
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US2745171A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1962-11-30 | 1963-06-01 | 1963-12-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-11-30 | 1967-06-01 | 1967-12-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-11-30 | 1971-06-01 | 1971-12-01 | $7700.00 | Window Closed / Lapsed |