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Xi Qingyuan
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Hefei City, CN
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last 30 patents
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Patent Grant
Blocking mechanism for amusement game with multiple lifting pins
Patent number
9,440,142
Issue date
Sep 13, 2016
Mega Mania Diversons LLC
Donald C. Campion
A63 - SPORTS GAMES AMUSEMENTS
Patents Applications
last 30 patents
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Patent Application
BLOCKING MECHANISM FOR AMUSEMENT GAME WITH MULTIPLE LIFTING PINS
Publication number
20140077452
Publication date
Mar 20, 2014
Mega Mania Diversions LLC
Donald C. Campion
A63 - SPORTS GAMES AMUSEMENTS