Patent
   D966032
Priority
May 04 2018
Filed
Feb 10 2022
Issued
Oct 11 2022
Expiry
Oct 11 2037
Assg.orig
Entity
unknown
3
20
n/a
The ornamental design for a screw shaft element, as shown and described.

FIG. 1 is a perspective view of a screw shaft element showing our new design;

FIG. 2 is a front view thereof;

FIG. 3 is a back view thereof;

FIG. 4 is a left view thereof;

FIG. 5 is a right view thereof;

FIG. 6 is a top view thereof; and,

FIG. 7 is a bottom view thereof.

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

Patent Priority Assignee Title
11779891, Oct 17 2017 Buss AG Asymmetrical three-blade screw-type shaft for a mixing and kneading machine
ER2410,
ER5695,
Patent Priority Assignee Title
3189324,
9022638, May 11 2009 Buss AG Mixing and kneading machine for continual compounding and method of implementing continual compounding by means of a mixing and kneading machine
9168676, Feb 06 2006 Buss AG Mixing and kneading machine
20050249030,
20070183253,
20090027994,
20090238911,
20090245014,
20100067320,
20100284236,
20140199424,
20140306370,
20200282622,
CN303608265,
CN307285622,
23336,
D706893, Jul 03 2013 Tent stake
D929799, May 04 2018 Buss AG Screw shaft element
KR3010755120000,
KR3010755130000,
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Executed onAssignorAssigneeConveyanceFrameReelDoc
Nov 16 2018WALTER, WOLFGANGBuss AGASSIGNMENT OF ASSIGNORS INTEREST SEE DOCUMENT FOR DETAILS 0590100948 pdf
Nov 16 2018SCHÖTZAU, MARTINBuss AGASSIGNMENT OF ASSIGNORS INTEREST SEE DOCUMENT FOR DETAILS 0590100948 pdf
Feb 10 2022Buss AG(assignment on the face of the patent)
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