Granted Patent
Utility
US 5,673,421 · App. 08/578,498
Drawing arranging system
Inventor:
Takahisa Shirakawa
Patented Case
View Patent ↗
Granted: Sep 30, 1997
Filed: Dec 26, 1995
Inventor
Takahisa Shirakawa
Assignee (at issue)
NEC CORPORATION
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.