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Patent
   D331585
Priority
Jun 06 1990
Filed
Jun 06 1990
Issued
Dec 08 1992
Expiry
Dec 08 2006
Inventors
Wolff, Rob…
Assg.orig
Assg.curr
Entity
unknown
Referenced by
5
References
3
Maint.:
n/a
The ornamental design for a grinding instrument, as shown.

FIG. 1 is a top plan view of a grinding instrument showing my new design;

FIG. 2 is a front elevational view;

FIG. 3 is a right side elevational view; and,

FIG. 4 is a perspective view thereof.

The bottom plan view being flat and unadorned.
INVENTORS:

Wolff, Robert

THIS PATENT IS REFERENCED BY THESE PATENTS:
Patent Priority Assignee Title
D620509, Jan 27 2009 Airtec AG Mobile grinding machine
D847881, Jan 30 2018 NINGBO SANKUI GRINDING MATERIAL CO , LTD Air-operated grinding device
D882367, Apr 18 2018 Skitter & Squirt Adventures, LLC Vacuum shroud attachment
D883057, Apr 18 2018 Skitter & Squirt Adventures, LLC; Skitter & Squirt, LLC Vacuum shroud attachment assembly
D897800, Apr 18 2018 Skitter & Squirt Adventures, LLC Vacuum shroud attachment
THIS PATENT REFERENCES THESE PATENTS:
Patent Priority Assignee Title
2350098,
4920702, Nov 15 1985 C & E FEIN GMBH & CO , LEUSCHNERSTRASSE 41 - 47, 7000 STUTTGART 1, WEST GERMANY A CORP OF FED REP OF GERMANY Portable grinder
92378,
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