Granted Patent
Utility
US 5,055,993 · App. 07/447,638
Invertor apparatus
Inventors:
Osamu Miyata, Katsunori Kawano, Youji Oki
Patented Case
View Patent ↗
Granted: Oct 8, 1991
Filed: Dec 8, 1989
Inventors
Osamu Miyata
Katsunori Kawano
Youji Oki
Assignee (at issue)
STANLEY ELECTRIC CO., LTD.
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.