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REFRIGERANT WITH LUBRICATING OIL FOR REPLACEMENT OF R22 REFRIGERANT

16/920,905 | U.S. Patent Application

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Location ELECTRONIC
Filed July 6, 2020
Examiner JOHN R HARDEE
Class 252
Art Group 1761
Patent No. 11,345,840
Case Type Utility - 252/067000
Status Patented Case
Parent 15/989,655 Patented
Parent 13/493,491 Patented
Parent 12/961,045 Patented
Parent 10/937,736 Abandoned
Parent 60/501,049 Expired
Last Updated: 1 year ago
Date # Transaction