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Inventor

MARSH DAVID R

US7 patents
⚠️ This page may combine multiple inventors who share the name “MARSH DAVID R”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.

SINGER CO

4 patents

STANDARD OIL CO INDIANA

1 patent

STANDARD OIL CO

1 patent

COMPUTER GRAPHICS SYSTEMS DEV

1 patent