US3387604A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Focused contact transducer
Assignee: Magnaflux Corp
•
Filing: 1965-02-23
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Granted: 1968-06-11
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Expires: 1985-02-23
Abstract
No abstract record available.
Inventors
- 👤 Kenneth R Erikson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-22 19:26
CPC Classifications
A; A61; A61B; A61B8/00; A61B8/42; A61B8/4272; A61B8/4281; G; G10; G10K; G10K11/00; G10K11/18; G10K11/26; G10K11/30
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) | 1971-06-11 | 1971-12-11 | 1972-06-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1975-06-11 | 1975-12-11 | 1976-06-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1979-06-11 | 1979-12-11 | 1980-06-11 | $7700.00 | Window Closed / Lapsed |