Granted Patent
Utility
US 4,988,375 · App. 07/396,955
Method for fitting a spherical lens into an optical coupling device
Inventor:
Christian Bornhauser
Patented Case
View Patent ↗
Granted: Jan 29, 1991
Filed: Aug 22, 1989
Inventor
Christian Bornhauser
Assignee (at issue)
Siemens Aktiengesellschaft
This patent predates the USPTO's electronic file wrapper — prosecution documents from this era exist only in the Patent Office's paper records. A certified copy of the file history can be ordered from the USPTO's paper archives.