Granted Patent
Utility
US 6,568,621 · App. 09/989,438
Seat belt retractor
Inventors:
Koji Hiramatsu, Takahiro Yamanishi
Patented Case
View Patent ↗
Granted: May 27, 2003
Filed: Nov 21, 2001
Inventors
Koji Hiramatsu
Takahiro Yamanishi
Assignee (at issue)
TAKATA 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.