Tube expander tool

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Description

FIG. 1 is a front perspective view of the tube expander tool;

FIG. 2 is a top plan view; and,

FIG. 3 is a bottom plan view.

Referenced Cited
U.S. Patent Documents
1393620 October 1921 Gavin
3986383 October 19, 1976 Petteys
Patent History
Patent number: D265377
Type: Grant
Filed: Apr 14, 1980
Date of Patent: Jul 13, 1982
Inventor: Kauno L. J. Koskinen (KK Konepaja)
Primary Examiner: James M. Gandy
Law Firm: McAulay, Fields, Fisher, Goldstein & Nissen
Application Number: 6/140,208
Classifications
Current U.S. Class: D 8/14
International Classification: D0805;