![]() 239000011087 paperboard Substances 0.000 claims description 29.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 Roger A Oberle filed Critical Roger A Oberle Priority to US337895A priority Critical patent/US3863868A/en Application granted granted Critical Publication of US3863868A publication Critical patent/US3863868A/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 US337895A Inventor Roger A Oberle Original Assignee Roger A Oberle Priority date (The priority date is an assumption and is not a legal conclusion. Google Patents US3863868A - Hang gliderÄownload PDF Info Publication number US3863868A US3863868A US337895A US33789573A US3863868A US 3863868 A US3863868 A US 3863868A US 337895 A US337895 A US 337895A US 33789573 A US33789573 A US 33789573A US 3863868 A US3863868 A US 3863868A Authority US United States Prior art keywords wing hang hang glider pilot glider Prior art date Legal status (The legal status is an assumption and is not a legal conclusion.
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