US3370229A
Expired / Lapsed
US
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Electrical capacitance measuring method and apparatus with digital form indication
Assignee: Sangamo Weston Ltd
•
Filing: 1964-05-25
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Granted: 1968-02-20
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Expires: 1984-05-25
Abstract
No abstract record available.
Inventors
- 👤 Hamburger Gerhart Lothar
- 👤 Dean Derek John
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 16:07
CPC Classifications
G; G01; G01R; G01R27/00; G01R27/02; G01R27/26; G01R27/2605; H; H03; H03M; H03M1/00; H03M1/12; H03M1/22; H03M1/24; H03M1/28; H03M1/30
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2326252A
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US2356579A
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US1832128A
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US2583763A
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US2806207A
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US2872641A
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US2883649A
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US2975295A
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FR1282307A
Cited
US3187186A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1971-02-19 | 1971-08-21 | 1972-02-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1975-02-19 | 1975-08-21 | 1976-02-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1979-02-19 | 1979-08-21 | 1980-02-20 | $7700.00 | Window Closed / Lapsed |