Propeller™ Sensor Model II U.S. Patent No. 9,550,031 B2
Propeller™ Sensor Model 2014-R U.S. Patent No. D757,926 S
Propeller™ Sensor Model 2014-D U.S. Patent No. D774,178 S
Propeller™ Sensor Model 2015-E U.S. Patent No. D777,904 S
Propeller™ Sensor Model 2016-M Patent pending.
Propeller™ Sensor Model 2017-B Patent pending.
Propeller™ Sensor Model 2018-F Patent pending.