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Patent
D951187
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Priority
Jan 17 2020
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Filed
Apr 07 2020
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Issued
May 10 2022
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Expiry
May 10 2037
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Assg.orig
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Entity
unknown
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0
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9
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n/a
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The ornamental design for a three-phase frequency converter, as shown and described.
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FIG. 1 illustrates a front side view of a first embodiment of a three-phase frequency converter.
FIG. 2 illustrates a rear side view of the three-phase frequency converter shown in FIG. 1.
FIG. 3 illustrates a left side view of the three-phase frequency converter shown in FIG. 1.
FIG. 4 illustrates a right side view of the three-phase frequency converter shown in FIG. 1.
FIG. 5 illustrates a top plan view of the three-phase frequency converter shown in FIG. 1.
FIG. 6 illustrates a bottom plan view of the three-phase frequency converter shown in FIG. 1.
FIG. 7 illustrates a front side perspective view of the three-phase frequency converter shown in FIG. 1.
FIG. 8 illustrates a bottom side perspective view of the three-phase frequency converter shown in FIG. 1.
FIG. 9 illustrates a front side view of a second embodiment of a three-phase frequency converter.
FIG. 10 illustrates a rear side view of the three-phase frequency converter shown in FIG. 9.
FIG. 11 illustrates a left side view of the three-phase frequency converter shown in FIG. 9.
FIG. 12 illustrates a right side view of the three-phase frequency converter shown in FIG. 9.
FIG. 13 illustrates a top plan view of the three-phase frequency converter shown in FIG. 9.
FIG. 14 illustrates a bottom plan view of the three-phase frequency converter shown in FIG. 9.
FIG. 15 illustrates a front side perspective view of the three-phase frequency converter shown in FIG. 9; and,
FIG. 16 illustrates a bottom side perspective view of the three-phase frequency converter shown in FIG. 9.
Liu, Yan, Zhao, Hua, Zhou, QuanHong
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