Granted Patent
Utility
US 6,827,550 · App. 10/387,077
Vacuum pump
Inventors:
Satoshi Okudera, Takashi Kabasawa, Tooru Miwata
Patented Case
View Patent ↗
Granted: Dec 7, 2004
Filed: Mar 12, 2003
Inventors
Satoshi Okudera
Takashi Kabasawa
Tooru Miwata
Assignee (at issue)
BOC Edwards Technologies 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.