HH

Holger Helber

U.S. Philips: 1 patents #4,133 of 8,851Top 50%
📍 Bremen, DE: #501 of 1,098 inventorsTop 50%
Overall (All Time): #4,054,473 of 4,157,543Top 100%
1
Patents All Time

Issued Patents All Time

Showing 1–1 of 1 patents

Patent #TitleCo-InventorsDate
4393403 Rotating diaphragm for a dynamic pick-up device having a pyroelectric layer Hans P. Geis 1983-07-12