Inventor · Peoria, IL, US

Walter M. Shaffer

11Patents
6h-index
4Co-inventors
48Inventor score

Filing activity: Nov 18, 1974 → Oct 10, 1978

Most-cited inventions

PatentTitleAreaCited byStatus
US4057019A Self-contained steering guidance means Performing Operations; Transporting 39 Expired
US4132132A Power train with an auxiliary creeper drive system Emerging Cross-Sectional Technologies 13 Expired
US4271723A Power train with an auxiliary creeper drive system Emerging Cross-Sectional Technologies 10 Expired
US4024968A Heavy lift side loader truck Performing Operations; Transporting 10 Expired
US4100739A Pressure sensitive charging means for a steering system Emerging Cross-Sectional Technologies 9 Expired
US3976158A Power steering system for electric-drive lift truck Performing Operations; Transporting 8 Expired
US4056989A Vehicle drive Emerging Cross-Sectional Technologies 6 Expired
US3977550A Side handling attachment Performing Operations; Transporting 4 Expired
US4189276A Side loading ultra-narrow aisle lift truck Performing Operations; Transporting 4 Expired
US4034881A Outrigger and frame support member Performing Operations; Transporting 2 Expired
US4099378A Blocking valve for power steering for lift trucks Emerging Cross-Sectional Technologies 2 Expired

Source: USPTO / EPO open patent data. Inventor disambiguation is heuristic; counts are objective bibliographic measures.