US3427481A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Ultrasonic transducer with a fluorocarbon damper
Assignee: Magnaflux Corp
•
Filing: 1965-06-14
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Granted: 1969-02-11
•
Expires: 1985-06-14
Abstract
No abstract record available.
Inventors
- 👤 James L Lenahan
- 👤 John R Colbert
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 11:34
CPC Classifications
G; G01; G01N; G01N29/00; G01N29/22; G01N29/24; G01N29/2437; B; B06; B06B; B06B1/00; B06B1/02; B06B1/06; B06B1/0644; B06B1/0662; B06B1/0681; B06B1/0685; G10; G10K; G10K11/00; G10K11/002; G01N2291/00; G01N2291/04; G01N2291/042; G01N2291/0426
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2748369A
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US2753543A
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US2872600A
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US2875354A
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US2946904A
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US2972068A
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US3200369A
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US3277435A
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US3270330A
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US3321648A
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1972-02-11 | 1972-08-12 | 1973-02-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-02-11 | 1976-08-12 | 1977-02-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-02-11 | 1980-08-12 | 1981-02-11 | $7700.00 | Window Closed / Lapsed |