Patent US2946904A successfully refreshed from Google Patents.
US2946904A
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Ultrasonic transducer arrangement for sending and receiving
Assignee: Realisations Ultrasoniques SA
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Filing: 1957-03-11
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Granted: 1960-07-26
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Expires: 1977-03-11
Abstract
No abstract record available.
Inventors
- 👤 Renaut Paul
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-22 23:29
CPC Classifications
G; G01; G01N; G01N29/00; G01N29/22; G01N29/24; G01N29/2437; B; B06; B06B; B06B1/00; B06B1/02; B06B1/06; B06B1/0607; B06B1/0622; B06B1/0629; G01N2291/00; G01N2291/04; G01N2291/042; G01N2291/0426; G01N2291/10; G01N2291/106
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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US2415832A
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US2420864A
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US2589403A
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US2484626A
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US2486560A
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US2628335A
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US2784325A
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US2810082A
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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) | 1963-07-26 | 1964-01-25 | 1964-07-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-07-26 | 1968-01-25 | 1968-07-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-07-26 | 1972-01-25 | 1972-07-26 | $7700.00 | Window Closed / Lapsed |