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U-Change Lock Industries, Inc. Patents
U-Change Lock Industries, Inc.
Oklahoma City, OK
No. of patents:

Patent Number Title Of Patent Date Issued
4231242 Plug for a key operated lock November 4, 1980
A plug for a key operated lock is provided with a plurality of bores transverse to the key slot formed through the plug. The bores accept studs which extend into the key slot to delimit the design of key blanks from which keys, fitting the lock, can be constructed. The selection of bores

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