Granted Patent
Utility
US 6,317,344 · App. 09/709,569
Electrical device with booster circuit
Inventors:
Norio Koizumi, Masahiko Tsuchiya
Patented Case
View Patent ↗
Granted: Nov 13, 2001
Filed: Nov 13, 2000
Inventors
Norio Koizumi
Masahiko Tsuchiya
Assignee (at issue)
SEIKO EPSON 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.