Inventor

BONVOULOIR JAMES

US3 patents

Patents

3 patents

US5461677AOct 24, 1995

Loudspeaker

FERROFLUIDICS CORP55 citations94

US4865334ASep 12, 1989

Long-life multi-stage ferrofluid seals incorporating a ferrofluid reservoir

FERROFLUIDICS CORP22 citations80

US5018751AMay 28, 1991

Stacked pole-piece ferrofluid seal apparatus

FERROFLUIDICS CORP19 citations71