Granted Patent
Utility
US 6,000,467 · App. 09/087,016
Multi-bored flat tube for use in a heat exchanger and heat exchanger including said tubes
Inventors:
Kazumi Tokizaki, Yutaka Higo, Nobuaki Go, Shigeharu Ichiyanagi
Patented Case
View Patent ↗
Granted: Dec 14, 1999
Filed: May 29, 1998
Inventors
Kazumi Tokizaki
Yutaka Higo
Nobuaki Go
Shigeharu Ichiyanagi
Assignee (at issue)
Showa Aluminum Corp.
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.