Granted Patent
Utility
US 4,552,576 · App. 06/641,880
Method of fabricating optical glass base material and apparatus for fabricating the same
Inventors:
Ryoichi Hara, Toshiaki Kuroha, Nobuo Inagaki
Patented Case
View Patent ↗
Granted: Nov 12, 1985
Filed: Aug 20, 1984
Inventors
Ryoichi Hara
Toshiaki Kuroha
Nobuo Inagaki
Assignees (at issue)
FURUKAWA ELECTRIC CO., LTD.
Nippon Telephone and Telegraph Public 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.