Patent Leaderboard
USPTO Patent Rankings Data through Dec 31, 2025
MK

Morris C. Keller — 3 Patents

UNUnknown: 1 patents #29,356 of 83,584Top 40%
Springfield, MO: #119 of 510 inventorsTop 25%
Missouri: #6,669 of 23,789 inventorsTop 30%
Overall (All Time): #1,328,092 of 4,157,543Top 35%
3 Patents All Time
Morris C. Keller has been granted 3 US patents while listed as an inventor at Unknown. The first was granted in 1981 and the most recent in September 1983. Morris C. Keller ranks #1,328,092 of 4,157,543 US inventors in our database (top 31.9%). Patent records list Morris C. Keller in Springfield, MO, US.

Patents per Year

Patents granted per year, 1981 to 1983Bar chart with a peak of 1 patents in 1981.peak 11981: 1 patents19811982: 1 patents19821983: 1 patents1983

Issued Patents All Time

Showing 1–3 of 3 patents

Patent #TitleCo-InventorsDate
4402343 Animal watering valve with protected biasing spring Earl C. Thompson, Francis Rustin 1983-09-06
4341182 Animal watering apparatus Francis Rustin 1982-07-27
4267800 Suspended watering system for poultry house Francis Rustin 1981-05-19