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
CA882261A
Inventor
Hahn Erich
Hahn Werner
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.)
Pentacon GmbH Foto und Feinwerktechnik
Original Assignee
Pentacon Dresden VEB
Publication date
Application grantedgrantedCritical
Publication of CA882261ApublicationCriticalpatent/CA882261A/en