US3459978A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Noise damped external rotor motor with ball bearings
Assignee: Licentia Patent Verwaltungs GmbH
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Filing: 1965-10-12
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Granted: 1969-08-05
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Expires: 1985-10-12
Abstract
No abstract record available.
Inventors
- 👤 Erich Trucks
- 👤 Klaus Frohmuller
- 👤 Dieter Helms
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 14:55
CPC Classifications
H; H02; H02K; H02K5/00; H02K5/04; H02K5/16; H02K5/173; H02K5/1737; F; F16; F16C; F16C27/00; F16C27/06; F16C27/066; H02K5/1732; F16C19/00; F16C19/52; F16C19/527; F16C19/54; F16C2300/00; F16C2300/20; F16C2380/00; F16C2380/26
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1579798A
Cited
US1641091A
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US2238435A
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US2682617A
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US2929944A
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US3107946A
Cited
US3253170A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1972-08-04 | 1973-02-03 | 1973-08-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-08-04 | 1977-02-03 | 1977-08-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-08-04 | 1981-02-03 | 1981-08-05 | $7700.00 | Window Closed / Lapsed |