US2804592A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Methods of and apparatus for measuring the capacitance of an insulated wire
Assignee: AT&T Inc
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Filing: 1953-09-03
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Granted: 1957-08-27
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Expires: 1973-09-03
Abstract
No abstract record available.
Inventors
- 👤 Merle C Biskeborn
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 21:36
CPC Classifications
G; G01; G01R; G01R31/00; G01R31/50; G01R31/58; G01R31/59; F; F02; F02P; F02P17/00; F02P2017/006; Y; Y10; Y10T; Y10T82/00; Y10T82/14; Y10T82/141; Y10T82/142
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1960-08-26 | 1961-02-25 | 1961-08-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1964-08-26 | 1965-02-25 | 1965-08-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1968-08-26 | 1969-02-25 | 1969-08-27 | $7700.00 | Window Closed / Lapsed |