Analogous structures download9/28/2023 ![]() Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.) Expired - Lifetime Application number US564545A Inventor John G L Skar Carl A Johnson Current Assignee (The listed assignees may be inaccurate. Google Patents Bookstack and analogous structureÄownload PDF Info Publication number US1978174A US1978174A US564545A US56454531A US1978174A US 1978174 A US1978174 A US 1978174A US 564545 A US564545 A US 564545A US 56454531 A US56454531 A US 56454531A US 1978174 A US1978174 A US 1978174A Authority US United States Prior art keywords members aisles uprights hollow extending Prior art date Legal status (The legal status is an assumption and is not a legal conclusion. Google Patents US1978174A - Bookstack and analogous structure US1978174A - Bookstack and analogous structure
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