Lowell T Wilson, Herbert A Plassmann: Portable basketball set. The Ohio Art Company, Hugh Adam Kirk, March 20, 1979: US04145044 (91 worldwide citation)

A preschool knock-down portable indoor basketball set comprising a sponge-rubber ball and a weighted vertically adjustable stand for a basket with a removable bounce-board.The weighted base of the stand has an annular socket for one end of a pair of telescopic tubes, adjustable in length by a pin th ...


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