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Leo Swan
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Jefferson, MD, US
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last 30 patents
Information
Patent Grant
Wooden floor stripping machine
Patent number
D341913
Issue date
Nov 30, 1993
Equipment Development Company, Inc.
Leo Swan
D32 - Washing, cleaning, or drying machine
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Patent Grant
Cutting blade wear guage
Patent number
D301987
Issue date
Jul 4, 1989
Equipment Development Company, Inc.
Leo Swan
D10 - Measuring, testing, or signalling instruments