Granted Patent
Utility
US 5,263,246 · App. 07/835,378
Bump forming method
Inventor:
Tsutomu Aoki
Patented Case
View Patent ↗
Granted: Nov 23, 1993
Filed: Feb 14, 1992
Inventor
Tsutomu Aoki
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.