Patent 5111822 Issued on May 12, 1992. Estimated Expiration Date: May 16, 2009. Estimated Expiration Date is calculated based on simple USPTO term provisions. It does not account for terminal disclaimers, term adjustments, failure to pay maintenance fees, or other factors which might affect the term of a patent.
An article of manufacture which is used in medical treatment is a concave wave focusing device and a piezoelectric surface coupled to a target locating and treatment aiming ultrasound transducer which is located between the target and the surface and which scans the target to display a target image in coincidence with a visible indication of the focal point of the focusing device.
Other References
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May 16, 2009. Estimated Expiration Date is calculated based on simple USPTO term provisions. It does not account for terminal disclaimers, term adjustments, failure to pay maintenance fees, or other factors which might affect the term of a patent.
