GEOSHACK PRODUCTIVITY & POSITIONING SOLUTIONS

IC 009. US 021 023 026 036 038. G and S: CONSTRUCTION LASERS, OPTICAL SURVEYING INSTRUMENTS, GPS AND LASER BASED GRADE CONTROL RECEIVERS THAT INDICATE THE ELEVATION OF THE CUTTING EDGE OF THE BLADE OF A CONSTRUCTION EARTHMOVING MACHINE, PC SOFTWARE FOR QUANTITATIVE TAKEOFF OF EARTHWORK VOLUMES AND DATA MANIPULATION, GPS BASED SURVEYING INSTRUMENTS, HANDHELD LASER BASED DISTANCE MEASURING TOOL FOR MEASURING INTERIOR DIMENSIONS. FIRST USE: 20010717. FIRST USE IN COMMERCE: 20010718