Granted Patent
Utility
US 6,568,030 · App. 09/647,783
Caster
Inventors:
Yasukuni Watanabe, Takeharu Shizume
Patented Case
View Patent ↗
Granted: May 27, 2003
Filed: Oct 5, 2000
Inventors
Yasukuni Watanabe
Takeharu Shizume
Assignee (at issue)
Kayaba Kogyo Kabushiki Kaisha
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.