I visited Melvin Tyler when I was in high school, that was the early 1970's, and he was old then. The shop was only 1/2 mile from school and it is about 1.5 miles from where I am now. It has not been his shop for years.
The 73143 zip code is a post office zip used for po boxes only. I seem to remember his daughter(?) running things on the south side of town many years ago. He may have sold the business.
Doing some checking it appears that they are operating as TYLER MANUFACTURING & DISTRU CO INC out of 1900 Shirley Dr, which is in Choctaw in the far east part of Oklahoma City. The company was formed in 1996. Brandy Matthews, age 40, appears to be operating out of that address, but Shari Matthews of 5653 N Penn, OKC, OK 73112 is the contact for the company. That address is a business building housing BINT L.L.C.(oil & gas)(405) 848-2113, COMSTOCK APPRAISAL SVC(real estate appraisals)(405) 608-0707, PIPPIN PROPERTIES INC(real estate)(405) 848-6161, Joullian Vineyards Ltd (405) 848-4585, Ad Astra Foundation (405) 858-1152, and Long Engineering Co (405) 848-3356.
If you need me to drop by and say 'howdy' let me know when you find them.