Pat Patterson began his chili dogs and fries career at East Speedway near Alvernon in the 1950s, then moved downtown to the corner of Congress and Church. He opened another location at South 6th Avenue and East Ajo Way before opening the surviving location on Grande just south of Speedway in 1962. The Pat’s sign was designed and constructed in 1962 by the ABCO Sign Company. It features three dimensional red Plexiglas letters encircled by four flashing neon bands recessed in a metal raceway.
Quotes from the internet:
"OMG! Somebody take away my car keys! Just ate a few Pat's chili dogs and I want to go back for more! This place is always on my mind but I rarely get a chance to stop in. It's such a treat."
"A Tucson tradition for more than 40 years, Pat's has won a devoted following with its tasty chili dogs (served in both mild and extra-spicy variations) and hand-diced, french-fried potatoes. Don't forget the pink lemonade to wash it all down."
References: https://preservetucson.org/sites/thpf/files/project-doc/the_neon_pueblo_tucsonsignguide.pdf