Inventor · Warrington, GB

David R. Parr

1Patents
1h-index
1Co-inventors
22Inventor score

Filing activity: Nov 16, 1984 → Nov 16, 1984

Most-cited inventions

PatentTitleAreaCited byStatus
US4770202A Valves providing transfer ports Emerging Cross-Sectional Technologies 1 Expired

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