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UNEQUAL-TORQUE COIL SPRING AND A SPRING MOTOR THEREOF

15/439,313 | U.S. Patent Application

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Location ELECTRONIC
Filed Feb. 22, 2017
Examiner SANG K KIM
Class 242
Art Group 3654
Patent No. 10,174,547
Case Type Utility - 242/373000
Status Patented Case
Child 16/240,267 Pending
Child 16/660,441 Pending
Child 105204038
Last Updated: 3 years, 10 months ago
Date # Transaction