DC

David N. Critchlow

IM International Mobile Machines: 15 patents #3 of 36Top 9%
IT Interdigital Technology: 8 patents #126 of 338Top 40%
HA Hughes Aircraft: 3 patents #508 of 2,963Top 20%
HL Hughes Electronics Limited: 1 patents #605 of 1,474Top 45%
📍 San Diego, CA: #1,394 of 23,606 inventorsTop 6%
🗺 California: #18,844 of 386,348 inventorsTop 5%
Overall (All Time): #140,146 of 4,157,543Top 4%
28
Patents All Time

Issued Patents All Time

Showing 26–28 of 28 patents

Patent #TitleCo-InventorsDate
4825448 Subscriber unit for wireless digital telephone system Graham M. Avis, Sandra J. K. Earlam, Karle J. Johnson, Bruce A. Smetana, Gregory L. Westling 1989-04-25
4764940 Modem for RF subscriber telephone system Eric Paneth, Moshe Yehushua 1988-08-16
4644561 Modem for RF subscriber telephone system Eric Paneth, Moshe Yehushua 1987-02-17