US2982911A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Electrical measuring apparatus
Assignee: Phillips Petroleum Co
•
Filing: 1956-01-26
•
Granted: 1961-05-02
•
Expires: 1976-01-26
Abstract
No abstract record available.
Inventors
- 👤 Dale A Fluegel
- 👤 Ernest D Tolin
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 02:07
CPC Classifications
G; G01; G01R; G01R27/00; G01R27/02; G01R27/26; G01R27/2617; G01R27/2623; G01R27/2629
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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US2599583A
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US2593766A
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US2724040A
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US2654067A
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US2702948A
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US2721975A
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US2765441A
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US2767296A
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US2767295A
Cited
US2826738A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1964-05-01 | 1964-10-31 | 1965-05-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1968-05-01 | 1968-10-31 | 1969-05-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1972-05-01 | 1972-10-31 | 1973-05-02 | $7700.00 | Window Closed / Lapsed |