US PATENT SUBCLASS 219 / 145.31
.~.~.~ Partially
Current as of:
June, 1999
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219 /
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ELECTRIC HEATING
50
DF
METAL HEATING (E.G., RESISTANCE HEATING)
{19}
145.1
DF
.~ Weld rod structure {4}
145.23
DF
.~.~ Flux coated {2}
145.31
.~.~.~ Partially
DEFINITION
Classification: 219/145.31
Partially:
(under subclass 145.23) Subject matter wherein only part of filler metal outer surface is covered.