patio door lock isnt working

A home owner from Princeton, NJ says:

My patio door lock is not working. I am attaching the pictures. Please let me know the part I need for locking mechanism.

User submitted photos of patio door hardware.
Profile picture of Tom
Tom from SWISCO responded:
I'm not sure if your problem lies with the mortise lock or handle, but see our 82-218 and 82-035, respectively. This hardware appears to match what you have.
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