U.S. Patent No. 11,428,532, Generating a Geomagnetic Map

U.S. Patent No. 11,680,802, Correlating Overlapping Magnetic Measurement Data from Multiple Magnetic Navigation Devices and Updating a Geomagnetic Map with that Data

U.S. Patent No. 11,725,946, Operating Modes of Magnetic Navigation Devices

U.S. Patent No. 11,719,716, Measuring Distance Traversed or Speed

Other U.S. and foreign patents pending.