S Index to the Patent Classification System
Hole saw ..... 408 / 204 Making ..... 76 / + Methods ..... 76 / 112 Metal sawing machines ..... 83 Saws ..... Milling machine ..... 409 / 79+ Photographic process ..... 430 / 323+ 434 / 82+ Scupper ..... / 182 19 / 5 R+ 19 / 85+ ...