(under subclass 296) Subject matter wherein the picture is created by removal of portions of the record carrier.
SEE OR SEARCH CLASS
346, Recorders,
150.2, for electric recording of phenomenal information using electrical discharge (e.g., spark or electroerosion), and subclass 76.1 for thermal recorders.
347, Incremental Printing of Symbolic Information,
159+, for apparatus and processes using electrical discharge (e.g., spark or electroerosion) to mark the record receiver, and subclasses 171+ for thermal marking.
