238000004519 manufacturing process Methods 0.000 description 4.230000023298 conjugation with cellular fusion Effects 0.000 description 4.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 Dart Manufacturing Co filed Critical Dart Manufacturing Co Priority to US726457A priority Critical patent/US2988361A/en Application granted granted Critical Publication of US2988361A publication Critical patent/US2988361A/en Anticipated expiration legal-status Critical Status Expired - Lifetime legal-status Critical Current Links
Original Assignee Dart Manufacturing 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.) Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.) Expired - Lifetime Application number US726457A Inventor Dart William Arthur Current Assignee (The listed assignees may be inaccurate. Google Patents US2988361A - Marble race gameĭownload PDF Info Publication number US2988361A US2988361A US726457A US72645758A US2988361A US 2988361 A US2988361 A US 2988361A US 726457 A US726457 A US 726457A US 72645758 A US72645758 A US 72645758A US 2988361 A US2988361 A US 2988361A Authority US United States Prior art keywords marble race game elements grooved Prior art date Legal status (The legal status is an assumption and is not a legal conclusion.
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