With Means To Feed Pattern Or Pattern Sensing Means Patents (Class 234/79)
With means to adjust pattern position or feed, or senser (Class 234/80)
Senser moves tool into position to receive actuating force (Class 234/81)
Senser controls effectiveness of actuating force to selected tool pair only (Class 234/82)
Interposer movable by senser (Class 234/84)
Senser controls application of power to interposer (Class 234/87)

There are no patents to show for this class.