Pation Door Lock Replacement

A home owner from Yardley PA says:
I'm lookibg to replace my patio door lock. It has no name on it or the door. It was installed about 12 years ago when the porch was added onto our house. It is white on the exterior and brass inside. Both parts have idential markings on the inside. It reads:

U.S Patent

Sash Control

I also found the keys to it. No name is on it but it has the number 21425 embossed. The enitre assembly is around 8 1/4 inches and the lock inset measuring 5 3/4 inches.

Please let me know if I can provide you with any additional clues. I look forward to hearing from you.

User submitted photos of patio door hardware.
Profile picture of Tom
Tom from SWISCO responded:
Check out our 82-073 handle set and 82-229 mortise lock and see if these are a match for your hardware.
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