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
CA863248A
Inventor
R. Beckham Robert
G. Brown Jack
N. De Rose Kenneth
L. Walters Emmett
D. Ryan Joseph
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
Emmett L Walters
Kenneth N De Rose
Robert R Beckham
Libbey Owens Ford Co
Publication date
Application grantedgrantedCritical
Publication of CA863248ApublicationCriticalpatent/CA863248A/en