DH

David P. Hartman

HD Hunter Douglas: 34 patents #15 of 264Top 6%
📍 Ashland, MA: #11 of 345 inventorsTop 4%
🗺 Massachusetts: #2,507 of 88,656 inventorsTop 3%
Overall (All Time): #101,218 of 4,157,543Top 3%
34
Patents All Time

Issued Patents All Time

Showing 26–34 of 34 patents

Patent #TitleCo-InventorsDate
7234213 Beam winding apparatus Wendell B. Colson 2007-06-26
7191816 Retractable shade with collapsible vanes Wendell B. Colson, Marjorie G. Harper, Daniel M. Fogarty, Ralph G. Jelic, Kristi K. Kopecky 2007-03-20
7181816 Beam winder with yarn shrink system Wendell B. Colson 2007-02-27
7178211 Beam winding apparatus with beam switching turntable Wendell B. Colson 2007-02-20
7017244 Beam winding apparatus Wendell B. Colson, Daniel M. Fogarty 2006-03-28
7017853 Apparatus for manufacturing an adjustable covering for architectural openings Wendell B. Colson 2006-03-28
6712311 Apparatus for manufacturing an adjustable covering for architectural openings Wendell B. Colson 2004-03-30
6382128 Apparatus for manufacturing an adjustable covering for architectural openings Wendell B. Colson 2002-05-07
6152068 Apparatus for manufacturing an adjustable covering for architectural openings Wendell B. Colson 2000-11-28