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Curtis J. Crawford
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Las Vegas, NV, US
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Patents Grants
last 30 patents
Information
Patent Grant
Slot machine using a count valve to award bonus game
Patent number
6,984,173
Issue date
Jan 10, 2006
Multimedia Games, Inc.
Robert J. Piechowiak
G07 - CHECKING-DEVICES
Information
Patent Grant
System and method of playing a card game
Patent number
6,749,501
Issue date
Jun 15, 2004
Curtis Crawford
A63 - SPORTS GAMES AMUSEMENTS
Information
Patent Grant
System and method of playing a card game
Patent number
6,726,561
Issue date
Apr 27, 2004
Curtis Crawford
A63 - SPORTS GAMES AMUSEMENTS
Information
Patent Grant
Slot machine with symbol save feature
Patent number
6,270,412
Issue date
Aug 7, 2001
Sigma Game, Inc.
Curtis J. Crawford
G07 - CHECKING-DEVICES
Information
Patent Grant
Bonus award feature in a gaming machine
Patent number
6,168,523
Issue date
Jan 2, 2001
Sigma Game Inc.
Robert J. Piechowiak
G07 - CHECKING-DEVICES
Information
Patent Grant
Bonus award feature in linked gaming machines having a common featu...
Patent number
6,012,982
Issue date
Jan 11, 2000
Sigma Game Inc.
Robert J. Piechowiak
G07 - CHECKING-DEVICES
Information
Patent Grant
Slot machine with symbol save feature
Patent number
5,997,401
Issue date
Dec 7, 1999
Sigma Game, Inc.
Curtis J. Crawford
G07 - CHECKING-DEVICES
Information
Patent Grant
Linked gaming machines having a common feature controller
Patent number
5,580,309
Issue date
Dec 3, 1996
Sigma Game, Inc.
Robert J. Piechowiak
G07 - CHECKING-DEVICES
Patents Applications
last 30 patents
Information
Patent Application
System and method of playing a card game
Publication number
20030195026
Publication date
Oct 16, 2003
Curtis Crawford
A63 - SPORTS GAMES AMUSEMENTS
Information
Patent Application
System and method of playing a card game
Publication number
20030042676
Publication date
Mar 6, 2003
Curtis Crawford
A63 - SPORTS GAMES AMUSEMENTS
Information
Patent Application
System and method for multi-line slot machines
Publication number
20030017868
Publication date
Jan 23, 2003
Curtis Crawford
G07 - CHECKING-DEVICES