HC

Herman P. Christopherson

AC Arctic Cat: 7 patents #24 of 154Top 20%
TT The Toro: 4 patents #119 of 552Top 25%
Overall (All Time): #427,039 of 4,157,543Top 15%
12
Patents All Time

Issued Patents All Time

Patent #TitleCo-InventorsDate
6793545 Controlled thrust steering system for watercraft Fred H. Bernier, Frank Hazard 2004-09-21
6634912 Controlled thrust steering system for watercraft Fred H. Bernier, Frank Hazard 2003-10-21
6568969 Controlled thrust steering system for watercraft Fred H. Bernier, Frank Hazard 2003-05-27
6554661 Controlled thrust steering system for watercraft Fred H. Bernier, Frank Hazard 2003-04-29
6520815 Controlled thrust steering system for watercraft Fred H. Bernier, Frank Hazard 2003-02-18
6231410 Controlled thrust steering system for watercraft Fred H. Bernier, Frank Hazard 2001-05-15
6159059 Controlled thrust steering system for watercraft Fred H. Bernier, Frank Hazard 2000-12-12
5771669 Method and apparatus for mowing irregular turf areas Thomas F. Langworthy, Richard A. Nelson 1998-06-30
5743319 Window blind with safety pull cord 1998-04-28
4558558 Lawn mower traction control system Herbert F. Horner, Jr., Michael M. Zenner, Daniel P. Nowack 1985-12-17
4458472 Lawn mower zone start system 1984-07-10
4306408 Grass catcher assembly William D. Wood 1981-12-22