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.)
Expired
Application number
CA16798F
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.)
Arthur Ditto Marine Optical Manufacturing Co
Original Assignee
Arthur Ditto Marine Optical Manufacturing Co
Publication date
Priority to CA16798FpriorityCriticalpatent/CA16798S/en
Application grantedgrantedCritical
Publication of CA16798SpublicationCriticalpatent/CA16798S/en