US3050646A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Magnetic coupling
Assignee: Phillips Petroleum Co
•
Filing: 1958-01-06
•
Granted: 1962-08-21
•
Expires: 1978-01-06
Abstract
No abstract record available.
Inventors
- 👤 William R Eddy
- 👤 George T Byer
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 10:14
CPC Classifications
H; H02; H02K; H02K49/00; H02K49/10; H02K49/104; H02K49/106; H02K5/00; H02K5/04; H02K5/12; H02K5/128
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2101665A
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US2386505A
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US2463409A
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US2457880A
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GB670682A
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US2556854A
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US2705762A
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GB715277A
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US2722617A
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US2909683A
Cited
US2931928A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1965-08-20 | 1966-02-19 | 1966-08-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1969-08-20 | 1970-02-19 | 1970-08-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1973-08-20 | 1974-02-19 | 1974-08-21 | $7700.00 | Window Closed / Lapsed |