3846945 is referenced by 34 patents and cites 17 patents.

A duckboard mat designed to give fatigue relief when supported on an existing floor has floor engaging ribs on its underside and an upper wearing surface with openings therein. A plurality of tongues extending laterally from one side of the mat have projections thereon and a plurality of staggered tongues extending laterally from the other side have recesses therein, whereby interlocking connections may be made with like mats.

Title
Duckboard fatigue relief mat
Application Number
05/294,212
Publication Number
3846945
Application Date
October 2, 1972
Publication Date
November 12, 1974
Inventor
Roby Michael A
Agent
Hamilton Renner & Kenner
Assignee
Rubbermaid Commercial Products
IPC
E04c 01/10
E04F 15/10
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