Granted Patent
Utility
US 5,885,200 · App. 08/837,944
Tool change device
Inventors:
Tsutomu Sugihara, Hisao Sasaki, Kazuoki Sakai
Patented Case
View Patent ↗
Granted: Mar 23, 1999
Filed: Apr 28, 1997
Inventors
Tsutomu Sugihara
Hisao Sasaki
Kazuoki Sakai
Assignee (at issue)
Nippei Toyama 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.