USD253554SExpiredUtility
Elastic frame for fireproof feed-through of electric cables in walls of concrete or rock or the like
Est. expirySep 23, 1996(expired)· nominal 20-yr term from priority
Inventors:Erik M. Blomqvist
41
PatentIndex Score
3
Cited by
4
References
1
Claims
Claims
exact text as granted — not AI-modifiedThe ornamental design for an elastic frame for fireproof feed-through of electric cables in walls of concrete or rock or the like, as shown.
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