USPTO trademark record

DUO-COOL

Dead mark · Owner HAYDEN TRANS-COOLER INC. · Classes 11

Mark details

Owner: HAYDEN TRANS-COOLER INC.
Serial number: 72387851
Registration number: 0927311
Status: EXPIRED (dead)
Classes: 11 (Appliances / lighting)
Filed: 1971-03-30
Registered: 1972-01-18
Goods / services: HEAT EXCHANGERS ADAPTED TO COOL TORQUE CONVERTER FLUID, ENGINE OIL, POWER STEERING FLUID AND OTHER FLUID ASSOCIATED WITH POWER UNITS AND VEHICLES

Register data as of 2026-11-08. Records can trail live filings — check the official USPTO search for the latest status before filing.

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