Classification opinions
… of grease at the points requiring lubrication. This Classification Opinion applies to the complete system. … books, manuscripts, etc., by the action of methyl bromide, prussic acid, etc. Adoption : 1961 … 3. Self-propelled … fan to suck up dust. Adoption : 1964 … 4. Horns operated by compressed air, comprising a blower, a small air tank, two …