Patent
   D252398
Priority
Feb 23 1977
Filed
Feb 23 1977
Issued
Jul 17 1979
Expiry
Jul 17 1993
Assg.orig
Entity
unknown
3
5
n/a
The ornamental design for a boring bar housing, as shown.

FIG. 1 is an isometric view of the boring bar housing;

FIG. 2 is a front view of the boring bar housing;

FIG. 3 is a bottom view of FIG. 2; and,

FIG. 4 is a top view of FIG. 2.

Grimsley, Ernest E.

Patent Priority Assignee Title
D743447, Sep 30 2014 INNOVEX DOWNHOLE SOLUTIONS, INC Centralizer
ER1996,
ER9440,
Patent Priority Assignee Title
2997900,
4011793, Oct 07 1975 Portable boring bar
4082474, Jan 07 1977 Drill attachment
203001,
239318,
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