An ultrasonic probe particularly suitable for ultrasonic diagnostic equipments of the electronic scanning type is made up of a multiplicity of piezoelectric transducer elements, each in the shape of a rectangular plate with electrode films coated on both sides, arranged in a row at intervals and an acoustic...http://www.google.com/patents/US4101795?utm_source=gb-gplus-sharePatent US4101795 - Ultrasonic probe
