Patent US3560913A successfully refreshed from Google Patents.
US3560913A
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Acoustic pulse focusing means
Assignee: United States Department of the Navy
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Filing: 1968-10-09
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Granted: 1971-02-02
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Expires: 1988-10-09
Abstract
Abstract AN ACOUSTIC IMPULES GENERATOR IS PROVIDED WITH A CONCAVE PISTON HEAD FOR FOCUSING THE PULSE GENERATED BY THE HEAD TO A POINT AHEAD OF THE GENERATNG SURFACE.
Inventors
- 👤 Lawrence G Copley
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 12:03
CPC Classifications
G; G01; G01V; G01V1/00; G01V1/02; G01V1/133; G10; G10K; G10K11/00; G10K11/18; G10K11/26; G10K11/32
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1974-02-01 | 1974-08-03 | 1975-02-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-02-01 | 1978-08-03 | 1979-02-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-02-01 | 1982-08-03 | 1983-02-02 | $7700.00 | Window Closed / Lapsed |