USD304376SExpiredUtility

Manhole step

58
Assignee: LANE INT CORPORATIONPriority: Sep 29, 1987Filed: Sep 29, 1987Granted: Oct 31, 1989
Est. expirySep 29, 2007(expired)· nominal 20-yr term from priority
Inventors:Michael K. Robertson
58
PatentIndex Score
10
Cited by
3
References
1
Claims

Claims

exact text as granted — not AI-modified
The ornamental design for a manhole step, as shown.

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