Who made atm?

In 1939, Luther Simjian patented an early and not-so-successful prototype of an ATM.

However, some experts have the opinion that James Goodfellow of Scotland holds the earliest patent date of 1966 for a modern ATM, and John D White (also of Docutel) in the US is often credited with inventing the first free-standing ATM design. In 1967, John Shepherd-Barron invented and installed an ATM in a Barclays Bank in London. Don Wetzel invented an American made ATM in 1968.

However, it wasn't until the mid to late 1980s that ATMs became part of mainstream banking.