DW

Donald W. Wilkening

UN Unknown: 2 patents #12,644 of 83,584Top 20%
📍 Park Rapids, MN: #2 of 28 inventorsTop 8%
🗺 Minnesota: #10,397 of 52,454 inventorsTop 20%
Overall (All Time): #767,293 of 4,157,543Top 20%
7
Patents All Time

Issued Patents All Time

Showing 1–7 of 7 patents

Patent #TitleCo-InventorsDate
D340973 Fireplace grate 1993-11-02
D318108 Fireplace 1991-07-09
5014683 High efficiency fireplace and method of operation 1991-05-14
D301369 Fireplace grate 1989-05-30
4706647 Air flow control for totally enclosed fireplace 1987-11-17
D280012 Fireplace door 1985-08-06
4515146 Fireplace door 1985-05-07