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Robert W. Stephan

VIVickers: 2 patents #29 of 188Top 20%

Northville, MI: #580 of 1,240 inventorsTop 50%

Michigan: #35,034 of 86,293 inventorsTop 45%

Overall (All Time): #2,342,485 of 4,157,543Top 60%

2 Patents All Time

Issued Patents All Time

Showing 1–2 of 2 patents

Patent #	Title	Co-Inventors	Date
4662046	Power transmission	—	1987-05-05
4406599	Variable displacement vane pump with vanes contacting relatively rotatable rings	—	1983-09-27