USD358753SExpiredUtility

Frequency inverter

95
Assignee: HITACHI LTDPriority: Jul 21, 1994Filed: Jul 21, 1994Granted: May 30, 1995
Est. expiryJul 21, 2014(expired)· nominal 20-yr term from priority
Inventors:Yoshiki YoshidaAkitaka TakeuchiNorinaga SuzukiHidenori Sugio
95
PatentIndex Score
93
Cited by
9
References
1
Claims

Claims

exact text as granted — not AI-modified
The ornamental design for a frequency inverter, as shown.

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