DH

Darrell L. Helms

E- E-Systems: 4 patents #17 of 229Top 8%
📍 Tucson, AZ: #1,506 of 6,004 inventorsTop 30%
🗺 Arizona: #8,163 of 32,909 inventorsTop 25%
Overall (All Time): #1,285,921 of 4,157,543Top 35%
4
Patents All Time

Issued Patents All Time

Showing 1–4 of 4 patents

Patent #TitleCo-InventorsDate
5815119 Integrated stacked patch antenna polarizer circularly polarized integrated stacked dual-band patch antenna James R. Sherman, Barry B. Pruett 1998-09-29
5757324 Low profile antenna array for land-based, mobile radio frequency communication system David A. Boyd, Anton S. Gecan 1998-05-26
4786914 Meanderline polarization twister Te-Kao Wu 1988-11-22
4587525 180 degree dipole phase shifter Kenneth M. Parsons 1986-05-06