.~ Including work heating or contact with combustion products {1}
20
.~.~ Carbon removal (e.g., from engines)
DEFINITION
Classification: 134/20
(under subclass 19) Processes in which carbon is removed from the work.
(1) Note. For example, this subclass includes internal combustion engine cleaning, in which the engine is operated to heat the same.
SEE OR SEARCH THIS CLASS, SUBCLASS:
2, for oxidative removal of carbon.
39, for miscellaneous carbon removal.
SEE OR SEARCH CLASS
123, Internal-Combustion Engines, for processes of engine operation, even though including cleaning, where steps of engine operation are claimed which are not necessary to the cleaning process claimed.
