(under subclass 9) Subject matter wherein a means or method is provided for determining the usable lifespan or exhaustion of a component or perishable material.
(1) Note. For example, this subject matter may also include maintenance counters.
SEE OR SEARCH THIS CLASS, SUBCLASS:
13, for component present or mounted.
23, for "out of paper" maintenance.
OTHER CLASSIFICATION SYSTEMS:
ipc{2}G03G15/00, for an electros:graphic process using a charge pattern.
jpofiG03G21/00 512, for determining the time for repairing and replacing.
