3859000 is referenced by 246 patents and cites 14 patents.

A road construction comprised of a plurality of identical invertible polygonal panels with each panel comprising a plurality of single piece peripheral frame members fixed together to define a polygonal configuration and each of the members having a roughly L-shaped projection extending therefrom which is adapted to be interlocked with an identical projection of an associated member. Each panel also has a pair of load-carrying sheets fixed on opposite sides of its frame members.

Road construction and panel for making same
Application Number
Publication Number
Application Date
March 30, 1972
Publication Date
January 7, 1975
Webster John L
Reynolds Metal Company
E01c 05/22
B63B 35/34
E02B 03/06
E01C 05/00
E01D 15/00
E01C 05/22
E01D 15/14
E01C 09/08
E01C 09/00
View Original Source