Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.) Filing date Publication date Application filed by Deere and Co filed Critical Deere and Co Priority to US05/601,659 priority Critical patent/US4057109A/en Application granted granted Critical Publication of US4057109A publication Critical patent/US4057109A/en Anticipated expiration legal-status Critical Status Expired - Lifetime legal-status Critical Current Links Original Assignee Deere and Co Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.) Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.) Expired - Lifetime Application number US05/601,659 Inventor Roger John Nelson Current Assignee (The listed assignees may be inaccurate.
Google Patents Tractor with hydraulic draft controlÄownload PDF Info Publication number US4057109A US4057109A US05/601,659 US60165975A US4057109A US 4057109 A US4057109 A US 4057109A US 60165975 A US60165975 A US 60165975A US 4057109 A US4057109 A US 4057109A Authority US United States Prior art keywords draft control piston main operatively Prior art date Legal status (The legal status is an assumption and is not a legal conclusion. Google Patents US4057109A - Tractor with hydraulic draft control
US4057109A - Tractor with hydraulic draft control