DM

Darwin T. McKnight

HL Hoover Limited: 34 patents #5 of 240Top 3%
📍 Louisville, OH: #2 of 111 inventorsTop 2%
🗺 Ohio: #1,443 of 73,341 inventorsTop 2%
Overall (All Time): #104,002 of 4,157,543Top 3%
34
Patents All Time

Issued Patents All Time

Showing 26–34 of 34 patents

Patent #TitleCo-InventorsDate
D334260 Vacuum cleaner hose rack with tool storage Milton G. Kieft 1993-03-23
D333020 Combined vacuum cleaner hose and rack 1993-02-02
D330615 Combined vacuum cleaner hose and rack John D. Essex 1992-10-27
D330616 Combined vacuum cleaner hose and rack Richard A. Wareham 1992-10-27
D329511 Combined vacuum cleaner tool and hose rack 1992-09-15
D329512 Power nozzle for a vacuum cleaner David W. Moine 1992-09-15
5137156 Hose and tool rack Richard F. Riczinger 1992-08-11
5111841 Central vacuum system wall valve William S. Houston, Greg A. Bilek 1992-05-12
D313681 Upper portion of a vacuum cleaner 1991-01-08