About 2 Trademarks found that are owned by Flettner Ventilator Limited

Ventilators for expelling air, smoke, gases and suspensions in gases from an enclosed space; parts and fittings for said ventilators

Ventilators, namely, turbine ventilators and wind driven rotary ventilators; turbine ventilators, namely, wind driven rotary ventilators; turbine ventilators, namely, wind driven rotary ventilators, other than fans for engines and motors; structural and replacement parts and fittings for all the aforesaid, namely, ventilator caps, ventilator liners, and ventilator adaptors