Rule 66 of the Regulations under the

sule 66Regulations under the PCT Rule 66 Procedure before the International Preliminary Examining Authority. 66.1 Basis of the International Preliminary Examination (a) Subject to paragraphs19024 M I N E R A L S P I R I T S 663 Revision 10 2025 Mineral Spirits 663 is a medium-boiling aliphatic solvent consisting primarily of C9-C12 saturated hydrocarbons with