Granted Patent
Utility
US 5,280,274 · App. 07/858,555
Method of detecting residual amount of web roll
Inventors:
Hisashi Uemura, Setsuo Sasabe, Takayasu Hongo
Patented Case
View Patent ↗
Granted: Jan 18, 1994
Filed: Mar 27, 1992
Inventors
Hisashi Uemura
Setsuo Sasabe
Takayasu Hongo
Assignee (at issue)
Kanzaki Paper Manufacturing 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.