Patent
   D310936
Priority
Sep 09 1987
Filed
Mar 08 1988
Issued
Oct 02 1990
Expiry
Oct 02 2004
Assg.orig
Entity
unknown
16
2
n/a
The ornamental design for a power hammer drill, as shown.

FIG. 1 is a front, top and right side perspective view of a power hammer drill showing our new design;

FIG. 2 is a right side elevational view thereof;

FIG. 3 is a top plan view thereof;

FIG. 4 is a left side elevational view thereof;

FIG. 5 is a bottom plan view thereof;

FIG. 6 is a front elevational view thereof; and

FIG. 7 is a rear elevational view thereof.

Saito, Toshiaki, Hara, Shintaro

Patent Priority Assignee Title
D327400, Mar 13 1990 Makita Electric Works, Ltd. Portable electric drill
D341532, Sep 26 1991 Ryobi Ltd. Concrete hammer
D442452, Aug 13 1999 Black & Decker Inc Rotary hammer
D447032, Apr 19 2000 Robert Bosch GmbH Hammer drill
D447677, Nov 18 1999 Black & Decker Inc Demolition hammer
D448638, Nov 20 1999 Andreas Stihl AG & Co Hand-held drill
D491438, Aug 12 2003 One World Technologies, Limited Hammer drill
D515382, Apr 05 2004 POSITEC POWER TOOLS SUZHOU CO , LTD Drill
D528393, Apr 28 2005 Black & Decker Inc Cordless hammer
D543082, Apr 28 2005 Black & Decker Inc Cordless hammer
D594304, Sep 22 2008 Robert Bosch GmbH Hammer drill
D602322, Dec 23 2007 FAIRSKQ TAIWAN CO , LTD Pneumatic spanner
D631315, Nov 09 2009 Makita Corporation Portable electric drill
D631720, May 20 2010 Robert Bosch GmbH Hammer drill
D631721, May 20 2010 Robert Bosch GmbH Hammer drill
D765485, Jan 21 2014 Robert Bosch GmbH Hammer drill
Patent Priority Assignee Title
D301967, Feb 11 1986 Ryobi Ltd. Power concrete hammer
JP660420,
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Executed onAssignorAssigneeConveyanceFrameReelDoc
Feb 19 1988SAITO, TOSHIAKIRyobi LTDASSIGNMENT OF ASSIGNORS INTEREST 0048460799 pdf
Feb 19 1988HARA, SHINTARORyobi LTDASSIGNMENT OF ASSIGNORS INTEREST 0048460799 pdf
Mar 08 1988Ryobi Ltd.(assignment on the face of the patent)
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