For Diverse-field (e.g., Plural-color) Ribbon Patents (Class 400/216.1)

With typewriter-controlled change of field (Class 400/216.2)

By movement parallel to print-line (Class 400/216.3)

Vibrator throw controlled via alternate pins selectively inserted in slots (Class 400/216.4)

Field selection by selectively positioned stop faces to limit vibrator movement (Class 400/216.5)

To compensate for case-shift (Class 400/216.6)

There are no patents to show for this class.