Inventor

HARTMAN ROBERT M

US3 patents

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

DITTLER BROTHERS INC

2 patents

US5117610AJun 2, 1992

Methods and apparatus for printing and collating materials from multiple webs

DITTLER BROTHERS INC54 citations92

US5429698AJul 4, 1995

Methods and apparatus for printing and collating materials from multiple webs

DITTLER BROTHERS INC14 citations70

CONCEPT

1 patent

US4108182AAug 22, 1978

Reciprocation vitreous suction cutter head

CONCEPT231 citations96