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Howard E. Tonn — 3 Patents

Lombard, IL: #162 of 459 inventorsTop 40%
Illinois: #26,899 of 84,256 inventorsTop 35%
Overall (All Time): #1,328,092 of 4,157,543Top 35%
3 Patents All Time
Howard E. Tonn has been granted 3 US patents. The first was granted in 1988 and the most recent in September 1990. Howard E. Tonn ranks #1,328,092 of 4,157,543 US inventors in our database (top 31.9%). Patent records list Howard E. Tonn in Lombard, IL, US.

Issued Patents All Time

Showing 1–3 of 3 patents

Patent #TitleCo-InventorsDate
4953727 Piston and shaft assembly of railroad end-of-car cushioning devices and method of repairing same Robert Davidson, David B. Shultz, Keith Miller 1990-09-04
4782740 Piston and shaft assembly for an end-of-car cushioning unit Donald R. Fagin, Clebern W. Sigley 1988-11-08
4719686 Method for repairing a piston and shaft assembly Donald R. Fagin, Clebern W. Sigley 1988-01-19

Frequent Collaborators

Donald R. Fagin2 shared
Clebern W. Sigley2 shared
Robert Davidson1 shared
David B. Shultz1 shared
Keith Miller1 shared

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