Inventor
KRULL MARK A
US119 patents
⚠️ This page may combine multiple inventors who share the name “KRULL MARK A”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.
(unassigned)
25 patentsUS6629910B1Oct 7, 2003
Adjustable weight exercise apparatus
137 citations99
US6540650B1Apr 1, 2003
Weight selection method and apparatus
168 citations99
US6416446B1Jul 9, 2002
Selectorized dumbbell
176 citations99
US6402666B2Jun 11, 2002
Adjustable weight exercise methods and apparatus
125 citations99
US6033350AMar 7, 2000
Exercise resistance methods and apparatus
179 citations99
US5876313AMar 2, 1999
Weight stack methods and apparatus
121 citations99
US6899661B1May 31, 2005
Exercise resistance methods and apparatus
81 citations98
US6872173B2Mar 29, 2005
Adjustable dumbbell methods and apparatus
69 citations98
US6855097B2Feb 15, 2005
Adjustable mass exercise methods and apparatus
89 citations98
US6749547B2Jun 15, 2004
Weight selection methods and apparatus
108 citations98
US6746381B2Jun 8, 2004
Exercise weight selection methods and apparatus
97 citations98
US6733424B2May 11, 2004
Exercise resistance methods and apparatus
135 citations98
US6719674B2Apr 13, 2004
Adjustable weight exercise methods and apparatus
102 citations98
US6679816B1Jan 20, 2004
Adjustable weight exercise methods and apparatus
96 citations98
US6669606B2Dec 30, 2003
Weight selection methods and apparatus
113 citations98
US6422979B1Jul 23, 2002
Weight selection methods for adjusting resistance to exercise
119 citations98
US6322481B1Nov 27, 2001
Adjustable weight exercise methods and apparatus
114 citations98
US6186927B1Feb 13, 2001
Weight selection apparatus
90 citations98
US6183397B1Feb 6, 2001
Multi-functional exercise methods and apparatus
142 citations98
US6099442AAug 8, 2000
Exercise dumbbells
91 citations98
US6902516B2Jun 7, 2005
Exercise resistance methods and apparatus
63 citations96
US6896645B1May 24, 2005
Exercise resistance methods and apparatus
63 citations96
USD500820SJan 11, 2005
Selectorized dumbbell handle
51 citations96
US6350221B1Feb 26, 2002
Convertible exercise apparatus with body supporting element
69 citations96
US6623407B2Sep 23, 2003
Energy absorbing system for exercise equipment
68 citations95
KRULL MARK A
21 patentsUS7621855B1Nov 24, 2009
Exercise dumbbell methods and apparatus
KRULL MARK A80 citations98
US7537550B1May 26, 2009
Exercise weight stack methods and apparatus
KRULL MARK A63 citations98
US7264578B1Sep 4, 2007
Exercise resistance method using an adjustable weight dumbbell
KRULL MARK A65 citations98
US7153243B1Dec 26, 2006
Weight selection methods
KRULL MARK A64 citations98
US7141008B2Nov 28, 2006
Rowing machine with elliptical seat motion
KRULL MARK A78 citations98
US6974405B2Dec 13, 2005
Exercise resistance methods and apparatus
KRULL MARK A86 citations98
US8287438B2Oct 16, 2012
Adjustable weight exercise methods and apparatus
KRULL MARK A33 citations96
US7497814B1Mar 3, 2009
Adjustable weight exercise dumbbell
KRULL MARK A49 citations96
US7291098B1Nov 6, 2007
Exercise dumbbell methods and apparatus
KRULL MARK A57 citations96
US7128696B1Oct 31, 2006
Adjustable mass exercise apparatus and methods
KRULL MARK A56 citations96
US7128697B1Oct 31, 2006
Exercise weight selection methods and apparatus
KRULL MARK A45 citations96
US7077790B1Jul 18, 2006
Adjustable weight exercise methods and apparatus
KRULL MARK A45 citations96
US7066867B2Jun 27, 2006
Methods and apparatus for adjusting weight resistance to exercise
KRULL MARK A55 citations96
US7060011B1Jun 13, 2006
Exercise resistance methods and apparatus
KRULL MARK A57 citations96
US6997856B1Feb 14, 2006
Adjustable weight exercise methods and apparatus
KRULL MARK A59 citations96
US7981013B2Jul 19, 2011
Kettlebell apparatus
KRULL MARK A45 citations94
US7976443B2Jul 12, 2011
Adjustable weight kettlebell
KRULL MARK A46 citations94
US7625322B1Dec 1, 2009
Exercise weight adjustment methods and apparatus
KRULL MARK A52 citations94
US9375602B2Jun 28, 2016
Exercise dumbbells
KRULL MARK A22 citations93
US8696529B2Apr 15, 2014
Adjustable weight exercise methods and apparatus
KRULL MARK A15 citations93
US8137248B1Mar 20, 2012
Exercise resistance apparatus
KRULL MARK A18 citations93
NAUTILUS INC
3 patentsIHLI STEPHEN P
1 patentShowing the top 50 of 119 patents by PatentIndex Score.