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Patent
   D615138
Priority
Mar 16 2006
Filed
Feb 23 2009
Issued
May 04 2010
Expiry
May 04 2024
Inventors
Briscoe, B…
Assg.orig
Betty Jane…
Assg.curr
Betty Jane…
Entity
unknown
Referenced by
14
References
15
Maint.:
n/a
The ornamental design for a back strengthening machine, as shown and described.

The single FIGURE is a left side perspective view showing my new design, the oblique shaded lines representing rubber, the right side being a mirror image thereof.

The broken lines represent portions of the structure that form no part of the claim.
INVENTORS:

Briscoe, Betty Jane

THIS PATENT IS REFERENCED BY THESE PATENTS:
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D666259, Dec 22 2011 Exercise device
D667063, Jun 13 2011 Pullup exercise attachment for a dip stand
D850543, Oct 19 2018 Pull-up bar
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D900223, Mar 07 2019 Trailer hitch mounted dual bimini ring toss game
D911543, Mar 27 2019 DONGGUAN SHENAI ELECTRONIC TECHNOLOGY CO., LTD. Massage device
D919108, Feb 01 2019 Dongguan Shenai Electronics Technology Co., Ltd. Massage device
D949375, Mar 19 2019 Massager
ER1476,
ER3671,
ER4528,
ER6921,
ER9111,
THIS PATENT REFERENCES THESE PATENTS:
Patent Priority Assignee Title
4623148, Apr 17 1986 Free throw shooting practice device
5308304, Jul 22 1992 Precor Incorporated Multi-hip exerciser
5618250, Sep 02 1994 Aerobic exercise machine targeting trunk muscles
6074328, Apr 14 1998 Paramount Fitness Corp. Linked leverage exercise system
6168557, Aug 03 1999 Sound Sports Co., Ltd. Complex exerciser structure
6387024, Jun 05 1996 H P E HOLDINGS, LLC Device and method for kinesiologically correct exercise and rehabilitation
6544154, May 14 2001 J E M CONCEPT INTERNATIONAL, INC Variable resistance abdominal bench
6575880, Aug 22 2000 Anterior loading apparatus for strengthening a user's mid-torso and inner spine, and for posture training
6802800, Jul 01 1999 ROGERS ATHLETIC COMPANY, INC Variable resistance squat exercise machine
7101328, Sep 08 2003 Abdominal exercise device
7476183, Oct 28 2005 Weight lifting apparatus
20040067829,
D439938, Nov 05 1999 Ab crunch back extension exercise machine
D495380, Aug 14 2003 Adjustable barbell safety spotter bar stand
D573672, Apr 05 2007 Stomach exercise machine
ASSIGNMENT RECORDS    Assignment records on the USPTO
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Executed onAssignorAssigneeConveyanceFrameReelDoc
Feb 23 2009Betty Jane, Briscoe(assignment on the face of the patent)
MAINTENANCE FEES AND DATES:    Maintenance records on the USPTO
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