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John H. Spence

PSPullman Standard: 1 patents #11 of 20Top 60%

TPThe Pullman: 1 patents #67 of 165Top 45%

Hammond, IN: #83 of 261 inventorsTop 35%

Indiana: #13,671 of 33,936 inventorsTop 45%

Overall (All Time): #2,350,801 of 4,157,543Top 60%

2 Patents All Time

Issued Patents All Time

Showing 1–2 of 2 patents

Patent #	Title	Co-Inventors	Date
4630547	Cross bearer arrangement for slotted center sill	Phillip G. Przybylinski	1986-12-23
4206710	Railway car center plate filler arrangement	—	1980-06-10