Symmetrical Patents (Class D25/115)
Arcuate detail (Class D25/116)
Rectangular or square detail (Class D25/118)
  • Soil erosion prevention block
    Patent number: D351914
    Type: Grant
    Filed: February 22, 1993
    Date of Patent: October 25, 1994
    Inventor: Kossuth J. Landry, Jr.