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Patent
   D252881
Priority
May 13 1977
Filed
May 13 1977
Issued
Sep 11 1979
Expiry
Sep 11 1993
Inventors
Dummermuth…
Assg.orig
Von Arx AG
Assg.curr
Von Arx AG
Entity
unknown
Referenced by
3
References
3
Maint.:
n/a
The ornamental design for an apparatus for roughening and cleaning a surface or the like, as shown.

FIG. 1 is a perspective view of the apparatus for roughening and cleaning a surface or the like taken from the top, front and left sides thereof and showing my new design, and

FIG. 2 is a perspective view thereof taken from the top, front and right sides thereof, and

FIG. 3 is a rear elevational view thereof.
INVENTORS:

Dummermuth, Paul

THIS PATENT IS REFERENCED BY THESE PATENTS:
Patent Priority Assignee Title
5311638, Jul 15 1991 Oreck Holdings, LLC Cleaning device
5582256, Jun 27 1994 Pamag AG Wheel blocking for an implement for ground treatment
D341913, Jan 16 1992 Equipment Development Company, Inc. Wooden floor stripping machine
THIS PATENT REFERENCES THESE PATENTS:
Patent Priority Assignee Title
118581,
131286,
172168,
ASSIGNMENT RECORDS    Assignment records on the USPTO
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Executed onAssignorAssigneeConveyanceFrameReelDoc
May 13 1977Von Arx AG(assignment on the face of the patent)
MAINTENANCE FEES AND DATES:    Maintenance records on the USPTO
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