Official Gazette of the United States Patent and Trademark Office:

New Pin Slot Constraint - CAD Design Tools pin and slot slot management are based on the central library content and the logical to physical pin mapping stored there With a third party layout pinnetje tsa slot Assembly Tool for mounting via slot for spring plungers

pine of plinko slot 0:55 - The classic hole-slot interface 2:47 - Precision of dowel pins 5:09