Invention Grant US1004861A Flexible plank. 失效 Title translation: 灵活的计划。 Basic information Please log in to see more content Basic information Please log in to see more content Flexible plank. Patent Title: Flexible plank. Patent Title (中): 灵活的计划。 Application No.: US1911635234 Application Date: 1911-06-24 Publication No.: US1004861A Publication Date: 1911-10-03 Inventor: EK ARVID Applicant: EK ARVID Assignee: Arvid Ek Current Assignee: Arvid Ek Priority: US1911635234 1911-06-24 Information query Espacenet
