Code Responsive (e.g., Paging) (340/825.44) Patents (Class 340/FOR244)

Foreign Patent Art Collections

Distress signal alarm (340/825.45) (Class 340/FOR245)
Vibratory (tactual) alarm (340/825.46) (Class 340/FOR246)
Group call (340/825.47) (Class 340/FOR247)
Tone code (340/825.48) (Class 340/FOR248)

There are no patents to show for this class.