Patents Assigned to David White, L.L.C.
  • Optical automatic level
    Patent number: D440506
    Type: Grant
    Filed: February 18, 2000
    Date of Patent: April 17, 2001
    Assignee: David White, L.L.C.
    Inventors: Torsten J. R. Blaetter, Alan D. Bengtson, Casey A. Ketterhagen