USD414254SExpiredUtility

Portable air charge-discharge machine

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Assignee: BULTON ENTPR CO LTDPriority: May 22, 1998Filed: May 22, 1998Granted: Sep 21, 1999
Est. expiryMay 22, 2018(expired)· nominal 20-yr term from priority
Inventors:Hsin-Tsai Wu
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PatentIndex Score
4
Cited by
3
References
1
Claims

Claims

exact text as granted — not AI-modified
The ornamental design for a portable air charge-discharge machine, as shown and described.

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