1977 The next patent
alt text

In April 1977, EVVA became the first Austrian company to be granted a patent for the GPI key and lock combination. The complex technology – extreme zig zag profile, overlapping plug ribs, hardened steel pins in the plug, high levels of scanning and unlocking protection, fire retardant characteristics – makes unauthorised copying almost impossible.

We are here for you
Mon - Thu: 7:30 am - 4:30 pm
Fri: 7:30 am - 2:00 pm

+43 1 811 65-0
Use the contact form or directly write to us at