4. Communications: radio wave antennas
  5. Antennas
  6. Spiral or helical type

Chun-Hong Chen

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Compact lens system

Optical: systems and elements – Lens – Multiple component lenses
Reexamination Certificate

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Feed network for quadrifilar helix antenna

Communications: radio wave antennas – Antennas – Spiral or helical type
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Forming pocket and LDD regions using separate masks

Semiconductor device manufacturing: process – Forming bipolar transistor by formation or alteration of... – Self-aligned
Reexamination Certificate

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Profile ID: LFUS-PAI-P-1826108

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