Inventor
ROPER MICHAEL JAMES
CA5 patents
⚠️ This page may combine multiple inventors who share the name “ROPER MICHAEL JAMES”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.
Vital Alert Communication Inc
4 patentsUS9450684B2Sep 20, 2016
System, method and apparatus for controlling buried devices
Vital Alert Communication Inc7 citations77
US11118912B2Sep 14, 2021
Magnetic positioning system
Vital Alert Communication Inc1 citations51
US10277335B2Apr 30, 2019
Through-the-earth emergency radio system
Vital Alert Communication Inc0 citations45
US9866333B2Jan 9, 2018
Through-the-earth emergency radio system
Vital Alert Communication Inc1 citations45