Title:
Piezoelectric oscillator or vibrator for ultrasonic waves, especially as an instrument for therapeutical treatment and diagnosis
United States Patent 2728869


Inventors:
Reimar, Pohlman
Application Number:
US13709250A
Publication Date:
12/27/1955
Filing Date:
01/06/1950
Assignee:
Ultraschall A. G.
Primary Class:
Other Classes:
310/324, 310/327, 601/2
International Classes:
B06B1/06
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US Patent References:
Foreign References:
FR622035A1927-05-21
IT409790B