Granted Patent
Utility
US 6,446,872 · App. 09/182,134
Card reader having a space for discharging foreign matter therein
Inventors:
Eiji Imai, Kenji Hirasawa
Patented Case
View Patent ↗
Granted: Sep 10, 2002
Filed: Oct 29, 1998
Inventors
Eiji Imai
Kenji Hirasawa
Assignee (at issue)
Sankyo Seiki Mfg. Co., Ltd
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.