GR

Gilbert Norman Ravich

G( Gemological Institute Of America, Inc. (Gia): 2 patents #23 of 47Top 50%
📍 Lawndale, CA: #22 of 123 inventorsTop 20%
🗺 California: #93,399 of 386,348 inventorsTop 25%
Overall (All Time): #881,016 of 4,157,543Top 25%
6
Patents All Time

Issued Patents All Time

Showing 1–6 of 6 patents

Patent #TitleCo-InventorsDate
6653851 Refocusing wavelengths to a common focal plane for electrical trace testing Mario A. Cugini, Jeff Brakley, Eric Ford 2003-11-25
6650489 Gem identification viewer Shane Elen, James Shigley 2003-11-18
6369590 Apparatus and method using photoelectric effect for testing electrical traces Mario A. Cugini, Jeff Brakley 2002-04-09
6369591 Apparatus and method using photoelectric effect for testing electrical traces Mario A. Cugini, Jeff Brakley, George E. Miles, III, Ralph Giusti 2002-04-09
6292315 Gem identification viewer Shane Elen, James Shigley 2001-09-18
5811817 Method & apparatus for detecting fracture filled diamonds 1998-09-22