Granted Patent
Utility
US 4,597,785 · App. 06/636,525
Method of and apparatus for making optical preforms with a predetermined cladding/core ratio
Inventors:
Kamran Karbassiyoon, Francis I. Akers, Larry J. Raplee, Daniel G. Fletcher
Patented Case
View Patent ↗
Granted: Jul 1, 1986
Filed: Aug 1, 1984
Inventors
Kamran Karbassiyoon
Francis I. Akers
Larry J. Raplee
Daniel G. Fletcher
Assignee (at issue)
ITT Corporation
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.