Patent
   D329654
Priority
Feb 28 1990
Filed
Feb 28 1990
Issued
Sep 22 1992
Expiry
Sep 22 2006
Assg.orig
Entity
unknown
2
31
n/a
The ornamental design for a portable line-boring machine, as shown.

FIG. 1 is a top, front and right side perspective view of a portable line-boring machine showing my new design;

FIG. 2 is a front elevational view;

FIG. 3 is a rear elevational view;

FIG. 4 is a left side elevational view;

FIG. 5 is a top plan view; and,

FIG. 6 is a bottom plan view thereof.

FIG. 1 has been drawn on an enlarged scale with respect to FIGS. 2-6.

Smith, Robert J.

Patent Priority Assignee Title
8608412, Jan 29 2009 Feed mechanism for a boring bar
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