Granted Patent
Utility
US 5,407,116 · App. 08/035,239
Method and apparatus for cutting flat tubes
Inventors:
Kunihiko Nishishita, Takashi Sugita
Patented Case
View Patent ↗
Granted: Apr 18, 1995
Filed: Mar 23, 1993
Inventors
Kunihiko Nishishita
Takashi Sugita
Assignee (at issue)
Zexel GmbH
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.