USD253535SExpiredUtility

Mobile rotary drill rig

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Assignee: CHICAGO PNEUMATIC TOOL COPriority: Jan 19, 1977Filed: Jan 19, 1977Granted: Nov 27, 1979
Est. expiryJan 19, 1997(expired)· nominal 20-yr term from priority
Inventors:Walter SchmidtJack D. SmithJay R. Cory
73
PatentIndex Score
13
Cited by
2
References
1
Claims

Claims

exact text as granted — not AI-modified
The ornamental design for a mobile rotary drill rig, as shown and described.

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