Classification Information
Utility locators for determining the location of hidden or buried pipes, conduits, cables, or other conductors by sensing magnetic fields; utility current transmitters for use with utility locators for generating electrical current signals for coupling to hidden or buried utility pipes, cables, conduits, or other conductors; coupling apparatus for coupling electrical current signals from utility electrical transmitters to hidden or buried utility pipes, cables, conduits, or other conductors
Electrical and Scientific Apparatus