Assignee

PETRIE ROBERT D

1 granted patent·14 citations·filing 1974–1974

Technology mixA47B1 A63B1

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1 record

0142US3971556ACombination book end and dumbell apparatus and method of utilizing samePETRIE ROBERT D·Filed 1974·Granted Jul 27, 1976·14 cites·5 claims

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