USD273697SExpiredUtility

Combination filter and ionic gas generator assembly for purifying machine tool coolants

Assignee: JOHNSON DENNIS E JPriority: May 17, 1982Filed: May 17, 1982Granted: May 1, 1984

Est. expiryMay 17, 2002(expired)· nominal 20-yr term from priority

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exact text as granted — not AI-modified

The ornamental design for combination filter and ionic gas generator assembly for purifying machine tool coolants, substantially as shown.

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