U.S. federal trademark · Serial No. 86832438 · Reg. No. 902895
Mineral substances in the nature of expanded perlite for use as filtering media in non chemical filtering processes for agriculture and horticulture; industrial minerals, namely, expanded perlite for use as filtering media in non chemical filtering processes; mineral perlite of volcanic origin, namely, to filter all type of liquids for agriculture and horticulture; all the aforesaid expanded perlite only for use as internal filtering media for vacuum and pressurized filters
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