USD282103SExpiredUtility

Spiral staircase

23
Assignee: GREGOIRE RAYMONDPriority: Apr 4, 1983Filed: Apr 4, 1983Granted: Jan 7, 1986
Est. expiryApr 4, 2003(expired)· nominal 20-yr term from priority
Inventors:Raymond Gregoire
23
PatentIndex Score
3
Cited by
3
References
1
Claims

Claims

exact text as granted — not AI-modified
The ornamental design for a spiral staircase, substantially as shown and described.

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