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John S. Curtis
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Mayfield Heights, OH, US
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last 30 patents
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Patent Grant
Bending plastic pipe
Patent number
4,255,378
Issue date
Mar 10, 1981
Lee A. Miller
B29 - WORKING OF PLASTICS WORKING OF SUBSTANCES IN A PLASTIC STATE, IN GENERAL
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Patent Grant
Plastic pipe bending jig
Patent number
4,156,588
Issue date
May 29, 1979
Lee A. Miller
B29 - WORKING OF PLASTICS WORKING OF SUBSTANCES IN A PLASTIC STATE, IN GENERAL