▁ 1 9 1 4 , ▁both ▁Best ▁and ▁Hol t ▁introduced ▁models ▁without ▁the ▁front ▁" t iller " ▁or ▁ste ering ▁wheel . ▁Hol t ▁offered ▁the ▁C ater p ill ar ▁ 4 5 ▁and ▁Best ▁introduced ▁his ▁C .   L .   Best ▁Model ▁ 4 0 ▁" Track layer ". ▁ ▁Pat ents ▁and ▁tra dem ark ▁disput es ▁▁ ▁Benjamin ▁Hol t ▁ag gress ively ▁def ended ▁his ▁pat ents ▁and ▁was ▁quick ▁to ▁sue ▁anyone ▁he ▁felt ▁might ▁be ▁in fr ing ing ▁his ▁rights . ▁In ▁June ▁ 1 8 9 9 , ▁he ▁claimed ▁that ▁the ▁H aines - H ou ser ' s ▁tra ctors ▁used ▁certain ▁devices ▁for ▁which ▁Hol t ▁held ▁the ▁tra dem ark . ▁Hol t ▁sent ▁all ▁far mers ▁who ▁owned ▁H aines - H ou ser ▁tra ctors ▁in ▁Y olo ▁County , ▁California , ▁a ▁letter ▁containing ▁a ▁demand ▁that ▁they ▁stop ▁using ▁the ▁compet itor ' s ▁har vest ers ▁or ▁face ▁a ▁law suit . ▁In ▁the ▁same ▁month ▁he ▁su ed ▁William ▁W . ▁Nelson , ▁George ▁W . ▁Ba iley , ▁Henry ▁K . ▁He iken , ▁Hugh ▁A . ▁Log an , ▁William ▁S ull ivan ▁and ▁three ▁other ▁S ull iv ans ▁for ▁in fr ing ement ▁of ▁his ▁pat ents ▁for ▁" tra vel ing ▁th resh ers ▁and ▁combined ▁har vest ers ." ▁The ▁defend ants ▁successfully ▁file d ▁a ▁dem urr er , ▁getting ▁the ▁suit