cross reference

A notation in a file or on a list showing that a record is stored elsewhere An entry directing attention to one or more related entries

A notation in a file or on a list showing that a record has been stored elsewhere.

A reference (issued patent) in another class or subclass, or a reference made in a later-filed patent application to a related, earlier-filed application. MPEP 903.02(c), MPEP 202.01.