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
CA870044A
Inventor
C. Fritz Richard
C. Brewer Charles
M. Moe James
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.)
Chemetron Corp
Foster Grant Co Inc
Original Assignee
Chemetron Corp
Foster Grant Co Inc
Publication date
Application grantedgrantedCritical
Publication of CA870044ApublicationCriticalpatent/CA870044A/en