Hearing Aids, Electrical (381/68) Patents (Class 381/FOR127)
Foreign Patent Art Collections
- Including sound conducting tube (381/154) (Class 381/FOR141)
- Directional (381/155) (Class 381/FOR142)
- Sound intensifying or spreading element (381/156) (Class 381/FOR143)
- Absorbing or attenuating element (e.g., baffle, obstruction, damping) (381/158) (Class 381/FOR145)
- Enclosure or resonant cavity (381/159) (Class 381/FOR146)
- Having feature of edge-supported diaphragm (381/193) (Class 381/FOR153)
- Movable voice coil (381/194) (Class 381/FOR154)
- Including adjustment mechanism (381/198) (Class 381/FOR158)
- Magnetic circuit or core structure (381/199) (Class 381/FOR159)
- Specified diaphragm shape or structure (381/202) (Class 381/FOR162)
There are no patents to show for this class.
