Inventor

DIEDRICH FRITZ

DE2 patents

⚠️ This page may combine multiple inventors who share the name “DIEDRICH FRITZ”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.

DREYER HEINRICH WILHELM

1 patent

US4148523AApr 10, 1979

Folding adjustable work stool

DREYER HEINRICH WILHELM33 citations86

FIRMA HEINRICH WILHELM DREYER

1 patent

USD251098SFeb 20, 1979

Portable adjustable seat

FIRMA HEINRICH WILHELM DREYER18 citations71