USD331202SExpiredUtility

Triple tube viscosity testing instrument

Assignee: LOUIS C EITZEN CO INCPriority: Aug 29, 1991Filed: Aug 29, 1991Granted: Nov 24, 1992

Est. expiryAug 29, 2011(expired)· nominal 20-yr term from priority

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exact text as granted — not AI-modified

The ornamental design for a triple tube viscosity testing instrument, as shown and described.

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