Samsung Infuse 4G , too many pattern attempts lock solution

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http://forums.androidcentral.com – Dear Friends my son has accidentally tried wrong patterns on my galaxy infuse 4G ( SGH -I997R) and phone is locked. I have not set gmail account and its not working. I tried all tips / tricks suggested by various peoples / youtube but none is working. I dont want to factory reset handset and lose all data. Can someone help me to extract Data? Thank you Regards varad (HowTos)