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US3373355A
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US
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Apparatus for measuring electric field strength utilizing an electroviscous fluid
Assignee: Union Oil Company of California
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Filing: 1964-01-17
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Granted: 1968-03-12
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Expires: 1984-01-17
Abstract
No abstract record available.
Inventors
- 👤 Donald L Klass
- 👤 Robert M Haines
- 👤 Thomas W Martinek
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 14:51
CPC Classifications
G; G01; G01R; G01R29/00; G01R29/08; G01R29/0864; G01R29/0878; G01R13/00
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2733792A
Cited
US2651754A
Cited
US2917707A
Cited
US3122914A
Cited
US3001619A
Cited
US3105379A
Cited
US3239041A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1971-03-12 | 1971-09-11 | 1972-03-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1975-03-12 | 1975-09-11 | 1976-03-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1979-03-12 | 1979-09-11 | 1980-03-12 | $7700.00 | Window Closed / Lapsed |