USD267719SExpiredUtility
Self-propelled drilling machine
Individually held — no corporate assignee on recordPriority: Jun 13, 1980Filed: Jun 13, 1980Granted: Jan 25, 1983
Est. expiryJun 13, 2000(expired)· nominal 20-yr term from priority
Inventors:Stanford E. Case
57
PatentIndex Score
13
Cited by
2
References
1
Claims
Claims
exact text as granted — not AI-modifiedThe ornamental design for a self-propelled drilling machine, as shown and described.
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