USD329654SExpiredUtility

Portable line-boring machine

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Assignee: SMITH ROBERT JPriority: Feb 28, 1990Filed: Feb 28, 1990Granted: Sep 22, 1992
Est. expiryFeb 28, 2010(expired)· nominal 20-yr term from priority
Inventors:Robert J. Smith
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PatentIndex Score
3
Cited by
30
References
1
Claims

Claims

exact text as granted — not AI-modified
The ornamental design for a portable line-boring machine, as shown.

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