Frequency converter
Perin May 31, 2
U.S. patent number D638,793 [Application Number D/357,130] was granted by the patent office on 2011-05-31 for frequency converter. This patent grant is currently assigned to Vacon Oyj. Invention is credited to Andrea Perin.
| United States Patent | D638,793 |
| Perin | May 31, 2011 |
Frequency converter
Claims
CLAIM The ornamental design for a frequency converter, as shown and described.
| Inventors: | Perin; Andrea (Cavriago, IT) |
|---|---|
| Assignee: | Vacon Oyj (FI) |
| Appl. No.: | D/357,130 |
| Filed: | March 8, 2010 |
| Current U.S. Class: | D13/110 |
| Current International Class: | 1302 |
| Field of Search: | ;D13/110,101,123,162,184,199 ;D14/348,349,353,357,358 ;361/600,601,707,715,730 ;363/15,35,141,157,174,175,177 |
References Cited [Referenced By]
U.S. Patent Documents
| D296895 | July 1988 | Nakayama |
| D358753 | May 1995 | Yoshida et al. |
| D365082 | December 1995 | Cook et al. |
| D409139 | May 1999 | Cornell et al. |
| 6650559 | November 2003 | Okamoto et al. |
| D541743 | May 2007 | Virolainen et al. |
| D541745 | May 2007 | Virolainen et al. |
| D548183 | August 2007 | Hakala et al. |
Assistant Examiner: Holland; Derrick
Attorney, Agent or Firm: Holland & Hart LLP
Description
FIG. 1 is a top perspective view of a frequency converter showing my new design;
FIG. 2 is a front elevation view thereof;
FIG. 3 is a rear elevation view thereof;
FIG. 4 is a right elevation view thereof;
FIG. 5 is a left elevation view thereof;
FIG. 6 is a top plan view thereof; and,
FIG. 7 is a bottom plan view thereof.
The broken lines shown represent unclaimed subject matter and form no part of the claimed design.
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