Key decoder tool for use by locksmiths in determining the tumbler coding of locks

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Description

FIG. 1 is a perspective view of a key decoder tool for use by locksmiths determining the tumbler coding of locks showing our new design;

FIG. 2 is a front view thereof;

FIG. 3 is a rear view thereof;

FIG. 4 is a right view thereof;

FIG. 5 is a left view thereof;

FIG. 6 is a top view thereof; and,

FIG. 7 is a bottom view thereof.

Referenced Cited
U.S. Patent Documents
3868838 March 1975 Zimmerman et al.
4908605 March 13, 1990 Takatsuka
5595080 January 21, 1997 Whinton
Patent History
Patent number: D391470
Type: Grant
Filed: Oct 8, 1996
Date of Patent: Mar 3, 1998
Inventors: Leroy W. Johnson (Durham, NC), Deborah Johnson (Durham, NC)
Primary Examiner: Brian N. Vinson
Attorney: Harold H. Dutton, Jr.
Application Number: 0/60,820
Classifications
Current U.S. Class: D/8347; D8/330
International Classification: 0807;