Original Assignee Columbia Insurance 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.) ( en Inventor Kenneth Keith Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.) Granted Application number US10/985,269 Other versions US7406818B2 Google Patents US20060096270A1 - Yarn manufacturing apparatus and method US20060096270A1 - Yarn manufacturing apparatus and method