Granted Patent
Utility
US 4,705,986 · App. 07/008,144
High color rendering fluorescent lamp
Inventors:
Katsuaki Iwama, Mutsuo Takahashi, Haruo Shibata
Patented Case
View Patent ↗
Granted: Nov 10, 1987
Filed: Jan 22, 1987
Inventors
Katsuaki Iwama
Mutsuo Takahashi
Haruo Shibata
Assignee (at issue)
Matsushita Electronics 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.