Number | Name | Date | Kind |
---|---|---|---|
3100893 | Brueckmann | Aug 1963 | A |
3750181 | Kuecken | Jul 1973 | A |
4963879 | Lin | Oct 1990 | A |
6005521 | Suguro et al. | Dec 1999 | A |
6150981 | Suguro et al. | Nov 2000 | A |
Entry |
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Microwave Journal, “A Combination Monopole/Quadrifilar Helix Antenna for S-Band Terrestrial/Satellite Applications”, May 2001; McCarrick, Charles D. |