IMPEDANCE NETWORKS, e.g. RESONANT CIRCUITS

**Definition:** This place covers:

Apparatus or process specially adapted for the manufacture of impedance networks, resonating circuits or resonators, filters ( H03H3/00 ).

Impedance (matching) networks, resonating circuits or resonators and filters.

**Limiting references (this place does not cover):** - Waveguides, resonators, lines or other devices of the waveguide type -> H01P