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The ornamental design for an envelope opener, as shown and described. |
FIG. 1 is a top, front, right side perspective view of an envelope opener showing my new design;
FIG. 2 is a front elevational view thereof;
FIG. 3 is a rear elevational view thereof;
FIG. 4 is a top plan view thereof;
FIG. 5 is a bottom plan view thereof;
FIG. 6 is a left side elevational view thereof.
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D647776, | Nov 07 2008 | Pitney Bowes Inc.; PIITNEY BOWES INC | Letter opener |
D897429, | Nov 08 2018 | Eagle (Guangzhou) Technology Development Limited | Electric punch |
Patent | Priority | Assignee | Title |
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D304131, | May 25 1988 | ELM INDUSTRY CO , LTD , A CORP OF JAPAN | Envelope opener |
Executed on | Assignor | Assignee | Conveyance | Frame | Reel | Doc |
Jul 05 1989 | TANIGAMI, SHINTARO | ELM INDUSTRY CO , LTD , A CORP OF JAPAN | ASSIGNMENT OF ASSIGNORS INTEREST | 005715 | /0855 | |
Jul 11 1989 | Elm Industry Co., Ltd. | (assignment on the face of the patent) | / |
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