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SELF-PROPELLED DEVICE WITH ACTIVELY ENGAGED DRIVE SYSTEM

13/342,853 | U.S. Patent Application

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Location ELECTRONIC
Filed Jan. 3, 2012
Examiner MARY DA ZHI WANG CHEUNG
Class 701
Art Group 3667
Patent No. 8,571,781
Case Type Utility - 701/099000
Status Patented Case
Parent 61/430,023 Expired
Parent 61/430,083 Expired
Parent 61/553,923 Expired
Child 13/766,455 Patented
Child 14/35,841 Patented
Child 14/459,235 Patented
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Last Updated: 4 years, 10 months ago
Date # Transaction