Granted Patent
Utility
US 5,555,124 · App. 08/162,956
Rotating polygon mirror driving apparatus
Inventors:
Takao Yoshitsugu, Koichiro Ohata, Tsuyoshi Kano
Patented Case
View Patent ↗
Granted: Sep 10, 1996
Filed: Dec 8, 1993
Inventors
Takao Yoshitsugu
Koichiro Ohata
Tsuyoshi Kano
Assignee (at issue)
SUMITOMO ELECTRIC INDUSTRIES, 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.