Granted Patent
Utility
US 6,256,181 · App. 09/339,242
Fan drive device
Inventors:
Takahito Chinomi, Hideo Matsushiro, Toshinari Baba, Takehiko Nitta
Patented Case
View Patent ↗
Granted: Jul 3, 2001
Filed: Jun 24, 1999
Inventors
Takahito Chinomi
Hideo Matsushiro
Toshinari Baba
Takehiko Nitta
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.