US PATENT SUBCLASS 147 / *
HOOP MACHINES
Current as of:
June, 1999
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147 /
HD
COOPERING
*
HOOP MACHINES
{4}
43
DF
.~
> Miscellaneous
44
DF
.~
> Racking
45
DF
.~
> Lapping and pointing
46
DF
.~
> Lock-cutting