Jammed Patio Sliding door

A home owner from Sioux Falls SD says:
PAT #:6.264.252 is written on one end and
PAT#:5.820.170 is written on the same side but opposite end
We have not been able to find anyone to help replace our door handle, only a local handyman that was able to unlock it and remove it for us. Everyone says they do not work on these locks.
Thumbnail of the uploaded file named mortise lock
A home owner from Sioux Falls SD says:
It also says JAN 13 on the other side.
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Emily from SWISCO responded:

Thank you for reaching out to us. Have a look at the 82-260. This was the first mortise lock to come to mind. I recommend you review our specifications to see if they align with yours.

Alternate image for 82-260
Alternate image for 82-260

Alternate view of 82-260
Alternate view of 82-260

A home owner from Sioux Falls SD says:
Thanks, I was also wondering what type of handle would work best with this, part of the handle broke as well.
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Emily from SWISCO responded:

This mortise lock is compatible with a handful of handle sets but the best match ultimately depends on the original. May we see some photos of the handle in question? 

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