Frequency converter
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Description
The broken lines shown represent unclaimed subject matter and form no part of the claimed design.
Claims
The ornamental design for a frequency converter, as shown and described.
Referenced Cited
U.S. Patent Documents
D296895 | July 26, 1988 | Nakayama |
D358753 | May 30, 1995 | Yoshida et al. |
D365082 | December 12, 1995 | Cook et al. |
D409139 | May 4, 1999 | Cornell et al. |
6650559 | November 18, 2003 | Okamoto et al. |
D495296 | August 31, 2004 | Hussaini et al. |
D505915 | June 7, 2005 | Hussaini et al. |
D541743 | May 1, 2007 | Virolainen |
D541745 | May 1, 2007 | Virolainen |
D548183 | August 7, 2007 | Hakala et al. |
D606017 | December 15, 2009 | Charlson et al. |
Patent History
Patent number: D713336
Type: Grant
Filed: Dec 30, 2012
Date of Patent: Sep 16, 2014
Assignee: Vacon Oyj (Vaasa)
Inventor: Andrea Perin (Cavriago)
Primary Examiner: Derrick Holland
Application Number: 29/441,017
Type: Grant
Filed: Dec 30, 2012
Date of Patent: Sep 16, 2014
Assignee: Vacon Oyj (Vaasa)
Inventor: Andrea Perin (Cavriago)
Primary Examiner: Derrick Holland
Application Number: 29/441,017
Classifications
Current U.S. Class:
Transformer, Rectifier Or Casing Therefor (3) (D13/110)