Patent US3428839A successfully refreshed from Google Patents.
US3428839A
Expired / Lapsed
US
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Nutating-type actuator
Assignee: Babcock and Wilcox Co
•
Filing: 1966-06-06
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Granted: 1969-02-18
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Expires: 1986-06-06
Abstract
No abstract record available.
Inventors
- 👤 John C Singleton
- 👤 Donald H Mccullough
- 👤 Raymond J Hartz
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 09:15
CPC Classifications
H; H02; H02K; H02K41/00; H02K41/06; H02K41/065; F; F16; F16H; F16H1/00; F16H1/28; F16H1/32; F16H1/321; G; G21; G21C; G21C7/00; G21C7/06; G21C7/08; G21C7/12; G21C7/14; H02K7/00; H02K7/06; Y; Y02; Y02E; Y02E30/00; Y02E30/30
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
NL18513C
Cited
US1582076A
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US2275827A
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US2780740A
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US2953944A
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US2871382A
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US3010887A
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US3309278A
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US3249776A
Cited
US3341725A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1972-02-18 | 1972-08-19 | 1973-02-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-02-18 | 1976-08-19 | 1977-02-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-02-18 | 1980-08-19 | 1981-02-18 | $7700.00 | Window Closed / Lapsed |