if it did, the atf never would have allowed them in the first place... as then by definition, they would have been a sheengun> multiple patents for its designs
A US patent is to some extent an attestation - by the federal government - as to exactly how something works. If I get time, I’ll read the slide/bump stock patents to see if they describe their operation as involving a single function of the trigger. Highly doubtful.
if it did, the atf never would have allowed them in the first place... as then by definition, they would have been a sheengun