Inventor · Frankfurt, DE

Willi Apel

1Patents
1h-index
4Co-inventors
25Inventor score

Filing activity: Sep 5, 1985 → Sep 5, 1985

Most-cited inventions

PatentTitleAreaCited byStatus
US4671664A Photometer for measuring hot gases Physics 2 Expired

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