US PATENT SUBCLASS 291 / 41
SAND-DELIVERY PIPE
Current as of:
June, 1999
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291 /
HD
TRACK SANDERS
41
SAND-DELIVERY PIPE
{4}
42
DF
.~
> Cleaners {1}
44
DF
.~
> Flexible
45
DF
.~
> Telescopic
46
DF
.~
> Nozzles {1}
DEFINITION
Classification: 291/41
Details of sand-delivery spouts and pipes not otherwise classified below.
