75760644
Jul 26, 1999
High-voltage electrical substations and switchyards; Substation steel support structures and towers; Southern yellow pine and Douglas fir wood crossarms and braces
Electrical and Scientific ApparatusEnergy and communications facilities and infrasture, namely, high voltage electrical substations and switchyards for distributing power and high voltage substation steel support sturctures in the nature of and towers for transmitting electricity and communications
Environmental Control Apparatus