Patents/Inventors

Leon P. Stoel

Sioux Falls, SDUS1 patent

2 Patents

US123236582025
Devices, Systems, and Methods for Real Time Audience Measurement in Hospitality Environments
Sonifi Solutions, Inc.
0 cites
US120884052024
Systems and Methods for Controlling Hospitality Distribution Networks
SONIFI SOLUTIONS, Inc.
0 cites