USD263678SExpiredUtility

Roof insulation washer

Assignee: ILLINOIS TOOL WORKSPriority: Nov 7, 1979Filed: Nov 7, 1979Granted: Apr 6, 1982

Est. expiryNov 7, 1999(expired)· nominal 20-yr term from priority

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exact text as granted — not AI-modified

The ornamental design for a roof insulation washer, as shown.

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