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US Patent: 5,170,689
Metal working machine
Patentee:
Jim Dvorak - Cosmos, MN

USPTO Classifications:
83/197, 83/200, 83/515, 83/518, 83/599, 83/609, 83/821, 83/859

Tool Categories:
metalworking machines : metal punches
metalworking tools : metal punches
metalworking machines : metal shears

Assignees:
None

Manufacturer:
Not known to have been produced

Witnesses:
Unknown

Patent Dates:
Applied: May 20, 1991
Granted: Dec. 15, 1992

Patent Pictures:
USPTO pdf tiff
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