Granted Patent
Utility
US 5,095,672 · App. 07/718,772
Windowsill
Inventor:
Shinji Tanikawa
Patented Case
View Patent ↗
Granted: Mar 17, 1992
Filed: Jun 21, 1991
Inventor
Shinji Tanikawa
Assignee (at issue)
YKK Architectural Products Inc.
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.