DH

David J. Helmkamp

AT AT&T: 2 patents #7,280 of 18,772Top 40%
📍 Jersey City, NJ: #543 of 1,424 inventorsTop 40%
🗺 New Jersey: #29,833 of 69,400 inventorsTop 45%
Overall (All Time): #2,270,184 of 4,157,543Top 55%
2
Patents All Time

Issued Patents All Time

Showing 1–2 of 2 patents

Patent #TitleCo-InventorsDate
5628052 Wireless communication system using distributed switched antennas Charles M. DeSantis, Raymond Abbott Sackett 1997-05-06
5265150 Automatically configuring wireless PBX system James W. Smith 1993-11-23