Assignee

DUNN JOHN C

US·2 granted patents·84 citations·filing 1975–1990

Technology mixA24F1 A47C1

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2 records

0181US5114209AChair insert having a contoured back support portion and a seat support portionDUNN JOHN C·Filed 1990·Granted May 19, 1992·60 cites·14 claims
0266US4031905ASmoking tube with check valveDUNN JOHN C·Filed 1975·Granted Jun 28, 1977·24 cites·2 claims

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