USD276434SExpiredUtility

Portable oil well walking beam pump jack

48
Individually held — no corporate assignee on recordPriority: Nov 19, 1982Filed: Nov 19, 1982Granted: Nov 20, 1984
Est. expiryNov 19, 2002(expired)· nominal 20-yr term from priority
Inventors:Roy N. Laney
48
PatentIndex Score
6
Cited by
4
References
1
Claims

Claims

exact text as granted — not AI-modified
The ornamental design for a portable oil well walking beam pump jack, substantially as shown and described.

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