(1) Note. Subject matter under this definition includes methods for maintaining reaction motors in operative condition.
(2) Note. Methods of making reaction motors are classifiable in appropriate process classes. A patent having a claim to a reaction motor as an apparatus and also a claim to a method of making said motor is classifiable as an original in the appropriate subclass for the apparatus and cross-referenced to the appropriate process class.
SEE OR SEARCH CLASS
208, Mineral Oils: Processes and Products,
15+, for a petroleum fuel, such as gasoline, subclasses 22+ for an asphalt tar, pitch or resin mineral oil composition and subclass 39 for making, treating and recovery of asphalt, tar, pitch or resin.
502, Catalyst, Solid Sorbent, or Support Therefor: Product or Process of Making, appropriate subclass for a catalyst composition or a process of making or regenerating such composition.
(1) Note. Terms or phases used in titles or definitions are set forth at the end of this subclass with the meaning each is to have in this group of subclasses (205+).
