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Patent
   D288817
Priority
Sep 25 1984
Filed
Sep 25 1984
Issued
Mar 17 1987
Expiry
Mar 17 2001
Inventors
Brass, Hen…
Assg.orig
Ekebro Akt…
Assg.curr
Ekebro Akt…
Entity
unknown
Referenced by
0
References
5
Maint.:
n/a
The ornamental design for a concrete ejector, as shown and described.

FIG. 1 is a top, front and side perspective view of a concrete ejector showing my new design;

FIG. 2 is a top, rear and side perspective view thereof; and

FIG. 3 is a bottom, front and opposite side perspective view thereof.
INVENTORS:

Brass, Hendrik K.

THIS PATENT IS REFERENCED BY THESE PATENTS:
Patent Priority Assignee Title
THIS PATENT REFERENCES THESE PATENTS:
Patent Priority Assignee Title
2837772,
3374708,
3930061,
4150083, Mar 10 1976 United States Gypsum Company Contouring gypsum articles
4214674, May 30 1978 California R & D Center Hydro pistol with pressurized water container and with variable water ejection capability
ASSIGNMENT RECORDS    Assignment records on the USPTO
//
Executed onAssignorAssigneeConveyanceFrameReelDoc
Sep 18 1984BRASS, HENDRIK K Ekebro AktiebolagASSIGNMENT OF ASSIGNORS INTEREST 0043170850 pdf
Sep 25 1984Ekebro Aktiebolag(assignment on the face of the patent)
MAINTENANCE FEES AND DATES:    Maintenance records on the USPTO
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