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Inventor

RITCH DAVID J

US17 patents
⚠️ This page may combine multiple inventors who share the name “RITCH DAVID J”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.

HAWORTH INC

4 patents

STEELCASE INC

4 patents

MILLER HERMAN INC

4 patents

STEELCASE DEV CORP

3 patents

STEELCASE DEV INC

2 patents