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The ornamental design for a welding seam tracker, as shown and described. |
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FIG. 1 is a rear, left side and bottom perspective view of a welding seam tracker showing our new design;
FIG. 2 is a front, right side and top perspective view;
FIG. 3 is a rear elevational view;
FIG. 4 is a right side elevational view;
FIG. 5 is a front elevational view;
FIG. 6 is a left side elevational view;
FIG. 7 is a top plan view; and,
FIG. 8 is a bottom plan view thereof.
Forss, Torbjorn, Svensson, Tommy, Fardig, Hakan
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| ER7389, | |||
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| Executed on | Assignor | Assignee | Conveyance | Frame | Reel | Doc |
| Dec 30 1986 | FORSS, TORBJORN | ASEA AKTIEBOLAG, S-721 83 VASTERAS, | ASSIGNMENT OF ASSIGNORS INTEREST | 004678 | /0301 | |
| Dec 30 1986 | FARDIG, HAKAN | ASEA AKTIEBOLAG, S-721 83 VASTERAS, | ASSIGNMENT OF ASSIGNORS INTEREST | 004678 | /0301 | |
| Dec 30 1986 | SVENSSON, TOMMY | ASEA AKTIEBOLAG, S-721 83 VASTERAS, | ASSIGNMENT OF ASSIGNORS INTEREST | 004678 | /0301 | |
| Jan 07 1987 | ASEA Aktiebolag | (assignment on the face of the patent) | / | |||
| Sep 19 1990 | Cygnus Research Corporation | Cygnus Therapeutic Systems | CHANGE OF NAME SEE DOCUMENT FOR DETAILS EFFECTIVE ON 11 01 1990 | 005550 | /0286 | |
| Apr 05 1993 | Cygnus Research Corporation | Cygnus Therapeutic Systems | CORRECTIVE ASSIGNMENT TO DELETE PAT NO 5,007,790, ERRONEOUSLY RECORDED ON REEL 5550 FRAME 286 | 006449 | /0001 | |
| Sep 08 1995 | CYGNUS THERAPEUTIC SYSTEMS, INC | CYGNUS, INC | MERGER SEE DOCUMENT FOR DETAILS | 008261 | /0372 |
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