73113432
Jan 24, 1977
Oct 31, 1978
LASER RAY EQUIPMENT-NAMELY, LASER, LASER MOUNTING TRIPOD WITH LEVELING SUPPORT, LASER BEAM RECEIVER, LASER RECEIVER POSITION INDICATOR, AND LASER SYSTEM ACCESSORIES COMPRISING OFFSET BRACKETS, AND AUTOMATIC LEVELING PLATFORMS FOR THE CONTROL OF EARTH GRADING EQUIPMENT IN THE AGRICULTURAL INDUSTRY
Electrical and Scientific Apparatus