Warning marker for power lines
The FIGURE is a plan view of an warning marker for power lines, showing my new design.
The marker is of conventional thickness, and the rear is plain.
U.S. Patent Documents
|D266553||October 19, 1982||Kelly|
- Seton Identification Products p. J24 1989 (Electrical Hazard Sign).
Current U.S. Class: Card Type (8) (D20/40); D10/109