Closer is u.s patent 4,674,777 Crank is u.s patent 4505601 & UK patent 2135397
Casey from SWISCO responded:
December 20, 2021
Hello,
Take a look at the 39-187 and 39-188 operators, as well as the 38-036 lock, to see how the specifications compare to undamaged versions of your original hardware. Thanks for posting!