Hartland P. Klotz

AT AT&T: 1 patents #10,626 of 18,772Top 60%

AT American Telephone And Telegraph: 1 patents #132 of 699Top 20%

📍 Highland Park, IL: #346 of 599 inventorsTop 60%

🗺 Illinois: #48,934 of 84,256 inventorsTop 60%

Overall (All Time): #3,935,959 of 4,157,543Top 95%

Patents All Time

Issued Patents All Time

Showing 1–1 of 1 patents

Patent #	Title	Co-Inventors	Date
4859820	Quiet key switch	Casimer Gotfryd, Stephen L. Kay, Robert M. Wentzel	1989-08-22