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USPTO Patent Rankings Data through Dec 31, 2025
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David B. Cale — 4 Patents

DSDadant & Sons: 4 patents #1 of 4Top 25%
McLeansboro, IL: #120 of 612 inventorsTop 20%
Illinois: #21,640 of 84,256 inventorsTop 30%
Overall (All Time): #1,080,739 of 4,157,543Top 30%
4 Patents All Time
David B. Cale has been granted 4 US patents while listed as an inventor at Dadant & Sons. The first was granted in 1983 and the most recent in October 1986. David B. Cale ranks #1,080,739 of 4,157,543 US inventors in our database (top 26.0%). Patent records list David B. Cale in McLeansboro, IL, US.

Patents per Year

Patents granted per year, 1983 to 1986Bar chart with a peak of 2 patents in 1983.peak 21983: 2 patents19831984: 1 patents19841986: 1 patents1986

Issued Patents All Time

Showing 1–4 of 4 patents

Patent #TitleCo-InventorsDate
4615138 Bee smoker Rodney Little 1986-10-07
4476589 Ventilated hat Ralph Burgin 1984-10-16
D271250 Ventilated hat Ralph Burgin 1983-11-08
4385990 Separator for honey and wax 1983-05-31