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John Callahan
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Daytona Beach, FL, US
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Patents Grants
last 30 patents
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Patent Grant
Prize lift telescoping assembly
Patent number
7,416,168
Issue date
Aug 26, 2008
Bob's Space Racers, Inc.
John R. Callahan
B66 - HOISTING LIFTING HAULING
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Patent Grant
Game with object suspended by air
Patent number
7,306,231
Issue date
Dec 11, 2007
Bob's Space Racers, Inc.
John Callahan
G07 - CHECKING-DEVICES
Patents Applications
last 30 patents
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Patent Application
Game with object suspended by air
Publication number
20060105835
Publication date
May 18, 2006
Bob's Space Racers, Inc.
John Callahan
G07 - CHECKING-DEVICES