USD287342SExpiredUtility

Passive geophysical exploration device

27
Assignee: DENVER MINERAL EXPLOR CORPPriority: Apr 20, 1984Filed: Apr 20, 1984Granted: Dec 23, 1986
Est. expiryApr 20, 2004(expired)· nominal 20-yr term from priority
Inventors:Carl L. KoberH. David Procter-Gregg
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PatentIndex Score
2
Cited by
4
References
1
Claims

Claims

exact text as granted — not AI-modified
The ornamental design for a passive geophysical exploration device, as shown and described.

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