Inventor · disambiguated record

David Smith

Also filed as: SMITH DAVID · SMITH DAVID PROM

2 granted patents·11 citations·filing 2001–2020

49Inventor score

Technology areasE04G E05Y

Files withHERZOG RAILROAD SERVICES INC1

Top patents by PatentIndex Score

2 records

0150US6460581B1Wall hopperFiled 2001·Granted Oct 8, 2002·11 cites·8 claims
0249US11548537B2Centering apparatus for hopper car doorsHERZOG RAILROAD SERVICES INC·Filed 2020·Granted Jan 10, 2023·0 cites·10 claims

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Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →