EF

Erwin A. Frei

DA Danaher: 2 patents #938 of 2,950Top 35%
WG Wild Leitz Gmbh: 1 patents #6 of 25Top 25%
Overall (All Time): #1,658,607 of 4,157,543Top 40%
3
Patents All Time

Issued Patents All Time

Patent #TitleCo-InventorsDate
10495456 Method for calibrating a detection device, and detection device Harald Vennegeerts, Christian Hesse 2019-12-03
5252982 Method of precise position determination 1993-10-12
5233357 Surveying system including an electro-optic total station and a portable receiving apparatus comprising a satellite position-measuring system Hilmar Ingensand, Rene Scherrer 1993-08-03