CA2079919CCA 2079919CA2079919ACA2079919CCA 2079919 CCA2079919 CCA 2079919CCA 2079919 CA2079919 CA 2079919CA 2079919 ACA2079919 ACA 2079919ACA 2079919 CCA2079919 CCA 2079919C
Authority
CA
Canada
Prior art keywords
marker
panels
panel
angle
attitude
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Individual
Original Assignee
Individual
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 as to the accuracy of the date listed.)
Filing date
Publication date
Priority claimed from US07/775,751external-prioritypatent/US5223977A/en
Application filed by IndividualfiledCriticalIndividual
Publication of CA2079919A1publicationCriticalpatent/CA2079919A1/fr
Application grantedgrantedCritical
Publication of CA2079919CpublicationCriticalpatent/CA2079919C/fr