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USPTO Patent Rankings Data through Dec 31, 2025
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Keith Krumbeck — 5 Patents

UNUnknown: 2 patents #12,644 of 83,584Top 20%
SPSpectrum Products: 1 patents #8 of 18Top 45%
TCThe Cheney: 1 patents #5 of 9Top 60%
Milwaukee, WI: #533 of 2,770 inventorsTop 20%
Wisconsin: #9,126 of 40,088 inventorsTop 25%
Overall (All Time): #907,971 of 4,157,543Top 25%
5 Patents All Time
Keith Krumbeck has been granted 5 US patents while listed as an inventor at Unknown. The first was granted in 1981 and the most recent in April 2002. Keith Krumbeck ranks #907,971 of 4,157,543 US inventors in our database (top 21.8%). Patent records list Keith Krumbeck in Milwaukee, WI, US.

Issued Patents All Time

Showing 1–5 of 5 patents

Patent #TitleCo-InventorsDate
6378659 Swimming pool lift 2002-04-30
6170612 Swimming pool lift 2001-01-09
5572921 Lift for the handicapped 1996-11-12
5218727 Above ground spa lift for the handicapped 1993-06-15
4283803 Process for immersing in a swimming pool disabled persons using a wheelchair 1981-08-18