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Home › Electrically conductive ferrofluid bearing and seal apparatus and low-viscosity electrically conductive ferrofluid used therein

Electrically conductive ferrofluid bearing and seal apparatus and low-viscosity electrically conductive ferrofluid used therein

US Patent 4673997 · Granted Jun 16, 1987

Estimated economic value: $1,372,000 ⓘ

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