Patent US1519705A successfully refreshed from Google Patents.
US3548642A
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US
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Synthetic aperture ultrasonic imaging systems
Assignee: Magnaflux Corp
•
Filing: 1967-03-02
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Granted: 1970-12-22
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Expires: 1987-03-02
Abstract
No abstract record available.
Inventors
- 👤 John J Flaherty
- 👤 Kenneth R Erikson
- 👤 Metre Van Lund
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-22 18:40
CPC Classifications
G; G01; G01S; G01S15/00; G01S15/88; G01S15/89; G01S15/8906; G01S15/8997; G01N; G01N29/00; G01N29/04; G01N29/06; G01N29/0609; G01N29/0645; G01N29/0654; G01N29/069
Claims Analysis
Total Claims: 0
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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) | 1973-12-21 | 1974-06-22 | 1974-12-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1977-12-21 | 1978-06-22 | 1978-12-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1981-12-21 | 1982-06-22 | 1982-12-22 | $7700.00 | Window Closed / Lapsed |