US2952787A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Motor for contra rotating fans
Assignee: Moore Co
•
Filing: 1953-09-08
•
Granted: 1960-09-13
•
Expires: 1973-09-08
Abstract
No abstract record available.
Inventors
- 👤 Robert D Moore
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 11:00
CPC Classifications
H; H02; H02K; H02K7/00; H02K7/08; H02K7/083; H02K7/14
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1351999A
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GB155550A
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US1856587A
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US1861608A
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FR751421A
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FR760095A
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US2121073A
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US2285592A
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US2429061A
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US2462182A
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US2461076A
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US2457999A
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US2556435A
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DE874500C
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1963-09-13 | 1964-03-14 | 1964-09-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-09-13 | 1968-03-14 | 1968-09-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-09-13 | 1972-03-14 | 1972-09-13 | $7700.00 | Window Closed / Lapsed |