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John A. Gingrich

DADover Associates: 2 patents #30 of 107Top 30%

Toronto, CA: #3,468 of 9,482 inventorsTop 40%

Overall (All Time): #2,360,855 of 4,157,543Top 60%

2 Patents All Time

Issued Patents All Time

Showing 1–2 of 2 patents

Patent #	Title	Co-Inventors	Date
4368501	Control of electro-magnetic solenoid	—	1983-01-11
4220221	Method and apparatus for producing a speed pattern for an elevator car or similar vehicle	—	1980-09-02