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METHOD OF MAKING A CORRUGATED DEFLECTION DIAPHRAGM

14/317,854 | U.S. Patent Application

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Location ELECTRONIC
Filed June 27, 2014
Examiner SHAMIM AHMED
Class 216
Art Group 1713
Patent No. 9,550,023
Case Type Utility - 216/041000
Status Patented Case
Parent 61/840,150 Expired
Last Updated: 4 years, 8 months ago
Date # Transaction