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Inventor

HELMOND JOHANNES

NL4 patents
⚠️ This page may combine multiple inventors who share the name “HELMOND JOHANNES”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.

EMERY INDUSTRIES INC

2 patents

NAT DISTILLERS CHEM CORP

1 patent

UNICHEMA CHEMIE BV

1 patent