John A. Gingrich

DA Dover Associates: 2 patents #30 of 107Top 30%

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

Patents All Time

Issued Patents All Time

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