Granted Patent
Utility
US 4,336,049 · App. 06/189,856
Method for producing multi-component glass fiber preform
Inventors:
Shiro Takahashi, Kazuo Sanada, Koichi Inada, Osamu Fukuda
Patented Case
View Patent ↗
Granted: Jun 22, 1982
Filed: Sep 22, 1980
Inventors
Shiro Takahashi
Kazuo Sanada
Koichi Inada
Osamu Fukuda
Assignees (at issue)
Nippon Telegraph and Telephone Public Corporation
The Fujikura Cable Works Limited
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.