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
CA863905A
Inventor
A. L. Richard Georges
F. Cognet Jean-Marie
Heullant Jean
Vallier Jean-Pierre
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.)
Koninklijke Philips NV
Original Assignee
Philips Gloeilampenfabrieken NV
Publication date
Application grantedgrantedCritical
Publication of CA863905ApublicationCriticalpatent/CA863905A/en