First version of Combined Depth Gauge. US Patent # US 11525658 B2 Issued - 12/13/2022.
WHAT IS INNOVATION?
Hi, I am Valeryi Kulaha from Ukraine, 1950 year birthday. I am author and owner of US Patent # US 11525658 B2, issued -12/13/2022 - Combined Depth Gauge. Also I am author and editor of website www.1yachtua.com