HT

Harlin J. Trefz

JD John Deere: 14 patents #280 of 5,518Top 6%
DS Delta Systems: 2 patents #16 of 49Top 35%
NP Noma Outdoor Products: 2 patents #1 of 16Top 7%
Overall (All Time): #238,813 of 4,157,543Top 6%
19
Patents All Time

Issued Patents All Time

Patent #TitleCo-InventorsDate
9560800 Quick change rotary mower blade assembly Ronald L. Reichen 2017-02-07
8255126 Aerator having flexible frame Kenneth Edward Hunt, Shane D. Simon, Troy W. Harris, III, Ronald L. Reichen, John L. Bocksnick +1 more 2012-08-28
8234847 Automatic connection mechanism for mid-mounted implement Robert Neil Fox, Eric A. Howard, Carlos A. Diaz, Benjamin J. Swart 2012-08-07
8087481 Dual lever steering controls with control stops Wayne R. Hutchison 2012-01-03
7877972 Automatic connection mechanism for mid-mounted implement Robert Neil Fox, Eric A. Howard, Carlos A. Diaz, Benjamin J. Swart 2011-02-01
7669580 Electronic engine speed control system for grass mowing machine Carl S. Silbernagel, John B. Kuhn, Donald W. Ertmer 2010-03-02
7631478 Electric implement lift system for mower cutting units Robert A. Henson, Thomas G. Bartlett 2009-12-15
7347037 Transport method and apparatus for mower deck John David Sundberg, Christopher S. Thorman, Robert Neil Fox 2008-03-25
7278502 Implement and power take off attachment system David Ross, Brian Clement, Kenneth Edward Hunt 2007-10-09
7240470 Drive over mower deck Brian Clement, Thomas Deves, Robert Neil Fox 2007-07-10
7104036 Reverse implement option using reverse pedal 2006-09-12
6868925 Engine with integral actuator Ted Wetzel 2005-03-22
6644002 Walk-behind self-propelled power equipment unit with speed control 2003-11-11
6543560 Hydrostatic transmission with integral actuator Ted Wetzel 2003-04-08
5669211 Pivotal mounting for auxiliary blower Curtis R. Bening 1997-09-23
5669212 Auxiliary blower for mower deck Curtis R. Bening 1997-09-23
5354241 Belt clutch control apparatus Joe Deschamps 1994-10-11
5351467 Height adjustment mechanism for riding mower cutting deck Robert R. Boyd, Christopher Flowers 1994-10-04
5138825 Riding mower having a pedal operated height adjustment mechanism, air assisted discharge, and improved hydrostatic shift linkage Daniel T. Hergatt, Keith A. Mosley, Douglas Pohl 1992-08-18