Machine readable merchandise marking tag
Magnetic card substitute for coins for starting appliances and t
Magnetic card writing and reading device
Magnetic data reader employing magnetically operated solid state
Magnetic identification apparatus
Magnetic reader for bar encoded characters
Magnetic-type information card and method and apparatus for enco
Manually operable card reader
Mark reader with improved mark sensing heads
Marking document and template assembly and method of making the
Mechanical computer assembly
Mechanical fuel pump computer conversion mechanism
Mechanical fuel pump computer conversion mechanism
Memory fullness indicator
Method and an arrangement for reading coded information from a d
Method and apparatus for directing an observation member
Method and apparatus for interrupting a device for a preselected
Method and apparatus for tire identification
Method for identifying selected inventory items and reading the
Method of and apparatus for securing and storing personal inform