US Trademark Classification US04 Industrial oils, greases and fuels Biofuels Class 04 Biofuels 004-221 生物燃料 Chinese 生物燃料 English Biofuels Spanish Biocombustibles Term ID 004-221 Class 04 Type Goods Status Active · added, not since modified (A) Effective date 2008-07-24 Version 09-2007