US PATENT SUBCLASS 700 / 57
.~.~ Alignment or registration


Current as of: June, 1999
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700 /   HD   DATA PROCESSING: GENERIC CONTROL SYSTEMS OR SPECIFIC APPLICATIONS

1  DD  GENERIC CONTROL SYSTEM, APPARATUS OR PROCESS {15}
56  DD  .~ Digital positioning (other than machine tool) {5}
57.~.~ Alignment or registration {2}
58  DD  .~.~.~> Having position marking
59  DD  .~.~.~> Having optical sensing (e.g., image projection)