US3452274A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Apparatus for measuring loss characteristics of dielectric test specimens including an electrical bridge with sine to square wave conversion means and integration means
Assignee: Doble Engineering Co
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Filing: 1965-05-04
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Granted: 1969-06-24
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Expires: 1985-05-04
Abstract
No abstract record available.
Inventors
- 👤 Edmund H Povey
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 11:45
CPC Classifications
G; G01; G01R; G01R27/00; G01R27/02; G01R27/26; G01R27/2617; G01R27/2623; G01R27/2629; F; F04; F04D; F04D29/00; F04D29/40; F04D29/42; F04D29/4206; F04D29/4226; G01R23/00
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2497693A
Cited
US2781489A
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US2902650A
Cited
US2806175A
Cited
US3026474A
Cited
US3183446A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1972-06-23 | 1972-12-23 | 1973-06-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-06-23 | 1976-12-23 | 1977-06-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-06-23 | 1980-12-23 | 1981-06-24 | $7700.00 | Window Closed / Lapsed |