发明名称 Mr. see saw
摘要 A musical seesaw is provided and consists of a music box carried within hollow cylindrical post mounted on a base which is placed on a flat surface. When an elongated plank which is centrally carried between upper ends of a pair of spaced standards extending upwardly from the cylindrical post goes up and down, with a person riding on each end, the music box will operate.
申请公布号 US5217411(A) 申请公布日期 1993.06.08
申请号 US19900472299 申请日期 1990.01.30
申请人 SPECTOR, GEORGE;HOLMES, EVELYN 发明人 SPECTOR, GEORGE;HOLMES, EVELYN
分类号 A63G11/00 主分类号 A63G11/00
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