FROG SYS hyd powered dry
materials application systems  continue


US Patent              5,722,59
Canadian Patent    2,185,760

developed and continuously refined,
based on the operational experience gained
during 18 years of excessive aerial application
under the most adverse circumstances.

Application of the most adverse
bulk material found in forestry and agriculture,
dozens of types of ground limestone, not flowing autonomously, dumped on dirt roads, exposed to the elements.