A - Human Necessities – 61 – C
Patent
A - Human Necessities
61
C
83/1, 140/11
A61C 7/00 (2006.01) C22C 38/00 (2006.01)
Patent
CA 1317800
Abstract of the Disclosure An orthodontic coil spring is made of a shape-memory alloy wire which is wound into a coil and heat treated into a superelastic state. The coil spring imparts a predetermined spring force within a superelastic zone of deflection.
593920
Sim & Mcburney
Tomy K.k.
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