Granted Patent
Utility
US 6,065,176 · App. 09/261,663
Toothbrush
Inventors:
Takayuki Watanabe, Hisakata Hoshizaki
Patented Case
View Patent ↗
Granted: May 23, 2000
Filed: Mar 3, 1999
Inventors
Takayuki Watanabe
Hisakata Hoshizaki
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.