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ROTH STEVEN

US3 patents

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US5205690AApr 27, 1993

Concrete insert for attaching utility hangers to a structure

ROTH STEVEN88 citations94

US5082216AJan 21, 1992

Pipe hanger assembly

ROTH STEVEN25 citations91

US5040753AAug 20, 1991

Pipe support

ROTH STEVEN20 citations80