239000011150 reinforced concrete Substances 0.000 description 12.238000010276 construction Methods 0.000 title claims description 62.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 Thomas W Short filed Critical Thomas W Short Priority to US218901A priority Critical patent/US3234620A/en Application granted granted Critical Publication of US3234620A publication Critical patent/US3234620A/en Anticipated expiration legal-status Critical Status Expired - Lifetime legal-status Critical Current Links Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.) Expired - Lifetime Application number US218901A Inventor Thomas W Short Original Assignee Thomas W Short Priority date (The priority date is an assumption and is not a legal conclusion. Google Patents Hyperbolic paraboloid roof constructionĭownload PDF Info Publication number US3234620A US3234620A US218901A US21890162A US3234620A US 3234620 A US3234620 A US 3234620A US 218901 A US218901 A US 218901A US 21890162 A US21890162 A US 21890162A US 3234620 A US3234620 A US 3234620A Authority US United States Prior art keywords roof forms trailer construction frame Prior art date Legal status (The legal status is an assumption and is not a legal conclusion. Google Patents US3234620A - Hyperbolic paraboloid roof construction US3234620A - Hyperbolic paraboloid roof construction
0 kommentar(er)
