Granted Patent
Utility
US 6,779,969 · App. 10/308,795
Vacuum pump
Inventors:
Manabu Nonaka, Tooru Miwata, Takashi Kabasawa
Patented Case
View Patent ↗
Granted: Aug 24, 2004
Filed: Dec 3, 2002
Inventors
Manabu Nonaka
Tooru Miwata
Takashi Kabasawa
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.