Patent US2425347A successfully refreshed from Google Patents.
US2425347A
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US
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Apparatus for testing and classifying insulating sheets according to dielectric strength
Assignee: Aerovox Corp
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Filing: 1942-10-07
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Granted: 1947-08-12
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Expires: 1962-10-07
Abstract
No abstract record available.
Inventors
- 👤 Frank R Schmitt
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 18:55
CPC Classifications
G; G01; G01R; G01R27/00; G01R27/02; G01R27/26; G01R27/2617; Y; Y10; Y10S; Y10S209/00; Y10S209/905
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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US794146A
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US1237646A
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US1219426A
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US1763067A
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US1835382A
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US2016455A
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US1984031A
Cited
US2024583A
Cited
US2059254A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1950-08-11 | 1951-02-10 | 1951-08-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1954-08-11 | 1955-02-10 | 1955-08-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1958-08-11 | 1959-02-10 | 1959-08-12 | $7700.00 | Window Closed / Lapsed |