DF

David W. French

JM Johns Manville: 4 patents #89 of 372Top 25%
JC J. & M. Manufacturing Co.: 1 patents #10 of 21Top 50%
MS Manville Service: 1 patents #41 of 114Top 40%
📍 Littleton, CO: #228 of 1,939 inventorsTop 15%
🗺 Colorado: #6,668 of 40,980 inventorsTop 20%
Overall (All Time): #756,060 of 4,157,543Top 20%
7
Patents All Time

Issued Patents All Time

Showing 1–7 of 7 patents

Patent #TitleCo-InventorsDate
D501194 Clock radio Mark A. Kaestner, Kyle Kieper, Lori Frazier, Phil Cordell 2005-01-25
4579078 Sizing applicator Samuel R. Genson, Paul R. Van Gunten 1986-04-01
4522578 Apparatus for introducing a foamable plastic insulation into the space defined by an inner core pipe and an outer casing pipe while maintaining the spacing of the pipes William Wesley Martin 1985-06-11
4315630 Sealing ring for spigot and socket pipe joint Robert W. Heisler, Antonio Maldarella, Jr., Gilbert W. VanHoy 1982-02-16
4258935 Bell end of a bell and spigot joint Peter Rodrigo, Kemener J. Whalen 1981-03-31
4231983 Plastic pipe joint and method and assembly for making same 1980-11-04
4207283 Method of post thickening one end section of a plastic pipe Richard C. Faber, Wayne D. Weger 1980-06-10