US PATENT SUBCLASS 433 / 21
.~.~ Metallic spring

Current as of: June, 1999
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433 /   HD   DENTISTRY

2  DF  ORTHODONTICS {9}
18  DF  .~ Means to transmit or apply force to tooth {3}
21.~.~ Metallic spring

DEFINITION

Classification: 433/21

Metallic spring:

(under subclass 18) Subject matter comprising a device for creating a force between two teeth or between a tooth and arch wire comprising a metallic element of sufficient elastic property that it recovers its original shape when released after being distorted.

SEE OR SEARCH CLASS

267, Spring Devices, appropriate subclasses for springs in general.