US2951634A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Ventilating and supporting structure for motors of reversible fans
Assignee: Westinghouse Electric Corp
•
Filing: 1958-06-30
•
Granted: 1960-09-06
•
Expires: 1978-06-30
Abstract
No abstract record available.
Inventors
- 👤 Gustav H Koch
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 00:32
CPC Classifications
F; F04; F04D; F04D25/00; F04D25/02; F04D25/06; F04D25/0606
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1920315A
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US2193408A
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US2202622A
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US2314696A
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US2294586A
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US2394517A
Cited
US2397171A
Cited
US2622793A
Cited
US2516184A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1963-09-06 | 1964-03-07 | 1964-09-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-09-06 | 1968-03-07 | 1968-09-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-09-06 | 1972-03-07 | 1972-09-06 | $7700.00 | Window Closed / Lapsed |