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The ornamental design for a vortex blower, as shown. |
FIG. 1 is a front, top and right side perspective view of a vortex blower showing our new design;
FIG. 2 is a front elevational view thereof;
FIG. 3 is a right side elevational view thereof;
FIG. 4 is a top plan view thereof;
FIG. 5 is a left side elevational view thereof;
FIG. 6 is a rear elevational view thereof; and,
FIG. 7 is a bottom plan view thereof.
Fujio, Masayuki, Kobayashi, Kazuo, Hasegawa, Kengo, Abe, Takeshi, Ito, Eiichi, Chihara, Yukio, Yoshidomi, Toshiharu
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Patent | Priority | Assignee | Title |
3511578, |
Executed on | Assignor | Assignee | Conveyance | Frame | Reel | Doc |
Feb 28 1991 | YOSHIDOMI, TOSHIHARU | Hitachi, LTD | ASSIGNMENT OF ASSIGNORS INTEREST | 006012 | /0695 | |
Feb 28 1991 | ABE, TAKESHI | Hitachi, LTD | ASSIGNMENT OF ASSIGNORS INTEREST | 006012 | /0695 | |
Feb 28 1991 | ITO, EIICHI | Hitachi, LTD | ASSIGNMENT OF ASSIGNORS INTEREST | 006012 | /0695 | |
Feb 28 1991 | FUJIO, MASAYUKI | Hitachi, LTD | ASSIGNMENT OF ASSIGNORS INTEREST | 006012 | /0695 | |
Feb 28 1991 | KOBAYASHI, KAZUO | Hitachi, LTD | ASSIGNMENT OF ASSIGNORS INTEREST | 006012 | /0695 | |
Feb 28 1991 | HASEGAWA, KENGO | Hitachi, LTD | ASSIGNMENT OF ASSIGNORS INTEREST | 006012 | /0695 | |
Feb 28 1991 | CHIHARA, YUKIO | Hitachi, LTD | ASSIGNMENT OF ASSIGNORS INTEREST | 006012 | /0695 | |
Apr 19 1991 | Hitachi, Ltd. | (assignment on the face of the patent) | / |
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