US PATENT SUBCLASS 285 / 183
.~ Sheet metal

Current as of: June, 1999
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285 /   HD   PIPE JOINTS OR COUPLINGS

179  DF  ELBOW {5}
183.~ Sheet metal

DEFINITION

Classification: 285/183

(under subclass 179) Devices in which the material is originally in sheet form.

SEE OR SEARCH THIS CLASS, SUBCLASS:

424, for other sheet material couplings.