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USPTO Patent Rankings Data through Dec 31, 2025
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Warren E. Kart — 4 Patents

UNUnknown: 1 patents #29,356 of 83,584Top 40%
Bristol, CT: #85 of 363 inventorsTop 25%
Connecticut: #10,205 of 34,797 inventorsTop 30%
Overall (All Time): #1,080,739 of 4,157,543Top 30%
4 Patents All Time
Warren E. Kart has been granted 4 US patents while listed as an inventor at Unknown. The first was granted in 1980 and the most recent in August 1983. Warren E. Kart ranks #1,080,739 of 4,157,543 US inventors in our database (top 26.0%). Patent records list Warren E. Kart in Bristol, CT, US.

Issued Patents All Time

Showing 1–4 of 4 patents

Patent #TitleCo-InventorsDate
4400149 Concrete pipe making machine with redensification apparatus Roger L. Toffolon 1983-08-23
4351507 Multi-part form with improved tie and stripping means Roger L. Toffolon 1982-09-28
4251196 Apparatus for precasting concrete products Roger L. Toffolon 1981-02-17
4196161 Method for precasting concrete products Roger L. Toffolon 1980-04-01