85708027
Aug 20, 2012
Oct 15, 2013
Active Trademark
Crane load monitoring system consisting of an electronic load display, computer, electronic boom angle sensor, electronic hoist load sensor and electronic whip hoist load sensor; crane rope speed indicator system consisting of an electronic rope speed indicator display, computer, electronic boom angle sensor, electronic rope speed sensor and electronic rope travel direction sensor; crane operating slew limit system consisting of an electronic operation indicator display, a computer, electronic boom angle sensor and an electronic slew position sensor
Electrical and Scientific Apparatus