by Mark S
(Pa)
Hope you can help the door lock on the patio door is stuck locked I've taken the handle off and there's are around disk with the slot for a piece of flat stock in there I could insert a screwdriver and turn it but lock will not lock so attached is a picture of the side view of the lock itself I cannot find The name brand of the patio door said itself any help would be great.
Can the door manufacture be identified?