USD263928SExpiredUtility

Roof insulation washer

95
Assignee: ILLINOIS TOOL WORKSPriority: Nov 7, 1979Filed: Nov 7, 1979Granted: Apr 20, 1982
Est. expiryNov 7, 1999(expired)· nominal 20-yr term from priority
Inventors:George G. Dewey
95
PatentIndex Score
35
Cited by
2
References
1
Claims

Claims

exact text as granted — not AI-modified
The ornamental design for a roof insulation washer, as shown.

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