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The ornamental design for a screw shaft element, as shown and described.
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The broken lines in the drawings illustrate portions of the screw shaft element and form no part of the claimed design.
Walter, Wolfgang, Schötzau, Martin
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Executed on | Assignor | Assignee | Conveyance | Frame | Reel | Doc |
Nov 01 2018 | Buss AG | (assignment on the face of the patent) | / | |||
Nov 16 2018 | WALTER, WOLFGANG | Buss AG | ASSIGNMENT OF ASSIGNORS INTEREST SEE DOCUMENT FOR DETAILS | 047621 | /0454 | |
Nov 16 2018 | SCHÖTZAU, MARTIN | Buss AG | ASSIGNMENT OF ASSIGNORS INTEREST SEE DOCUMENT FOR DETAILS | 047621 | /0454 |
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