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The ornamental design for a vacuum switch, as shown.
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FIG. 1 is a top, front and left-side perspective view of a vacuum switch showing our new design;
FIG. 2 is a front view thereof;
FIG. 3 is a rear view thereof;
FIG. 4 is a top plan view thereof;
FIG. 5 is a bottom plan view thereof;
FIG. 6 is a right side view thereof; and,
FIG. 7 is a left side view thereof.
Toyama, Takashi, Nagai, Shigekazu, Ito, Yoshiharu
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| Executed on | Assignor | Assignee | Conveyance | Frame | Reel | Doc |
| May 31 2004 | NAGAI, SHIGEKAZU | SMC Kabushiki Kaisha | ASSIGNMENT OF ASSIGNORS INTEREST SEE DOCUMENT FOR DETAILS | 014879 | /0908 | |
| May 31 2004 | ITO, YOSHIHARU | SMC Kabushiki Kaisha | ASSIGNMENT OF ASSIGNORS INTEREST SEE DOCUMENT FOR DETAILS | 014879 | /0908 | |
| May 31 2004 | TOYAMA, TAKASHI | SMC Kabushiki Kaisha | ASSIGNMENT OF ASSIGNORS INTEREST SEE DOCUMENT FOR DETAILS | 014879 | /0908 | |
| Jun 01 2004 | SMC Kabushiki Kaisha | (assignment on the face of the patent) | / |
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