Granted Patent
Utility
US 6,046,614 · App. 09/052,154
Drive circuit having a power recovery system
Inventor:
Kenichiro Takahashi
Patented Case
View Patent ↗
Granted: Apr 4, 2000
Filed: Mar 31, 1998
Inventor
Kenichiro Takahashi
Assignee (at issue)
NEC 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.