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David B. Ayers
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Houston, TX, US
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last 30 patents
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Patent Grant
Apparatus and method for manupulating a spring toy
Patent number
5,178,576
Issue date
Jan 12, 1993
David B. Ayers
A63 - SPORTS GAMES AMUSEMENTS
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Patent Grant
Manipulative amusement device
Patent number
4,881,738
Issue date
Nov 21, 1989
David B. Ayers
A63 - SPORTS GAMES AMUSEMENTS
Information
Patent Grant
Manipulative amusement device
Patent number
4,708,345
Issue date
Nov 24, 1987
David B. Ayers
A63 - SPORTS GAMES AMUSEMENTS