HB

Howard Bidwell

UN Unknown: 5 patents #3,065 of 83,584Top 4%
📍 Granby, MA: #11 of 124 inventorsTop 9%
🗺 Massachusetts: #15,851 of 88,656 inventorsTop 20%
Overall (All Time): #669,578 of 4,157,543Top 20%
8
Patents All Time

Issued Patents All Time

Showing 1–8 of 8 patents

Patent #TitleCo-InventorsDate
5313797 Exhaust gas turbine powered system for transforming pressure into rotative motion 1994-05-24
4802335 Method of and apparatus for improving the efficiency of internal combustion engines 1989-02-07
4791896 Water cooled scavenged crankcase type Otto internal combustion engine 1988-12-20
4781729 Method and apparatus for improving the efficiency of internal combustion engines 1988-11-01
4779576 Water cooled scavenged crankcase type otto internal combustion engine 1988-10-25
4774810 Method of and apparatus for improving the efficiency of internal combustion engines 1988-10-04
4773981 Apparatus for improving internal combustion engine efficiency 1988-09-27
4484444 Apparatus and methods of amplifying engine emissions by which to increase the overall engine efficiency 1984-11-27