Hygas Trademarks

HYGAS
research, development and engineering services relating to hydrogasification processes for producing synthetic gas which is fully interchangeable with natural gas
Cancelled  ·  August 16, 1990  ·  74088682  · 
HYGAS
SYNTHETIC GAS THAT IS FULLY INTERCHANGEABLE WITH NATURAL GAS AND IS PRODUCED BY A HYDRO-GASIFICATION PROCESS
Expired  ·  November 4, 1969  ·  72342590  ·