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
CA865926A
Inventor
J. Schroder Robert
H. Welker Robert
J. Carson Frank
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.)
Pilkington North America Inc
Original Assignee
Frank J Carson
Robert H Welker
Libbey Owens Ford Co
Publication date
Application grantedgrantedCritical
Publication of CA865926ApublicationCriticalpatent/CA865926A/en