Granted Patent
Utility
US 4,282,998 · App. 06/148,197
Maintenance of constant web clearance at contactless turning guide
Inventor:
Andres Peekna
Patented Case
View Patent ↗
Granted: Aug 11, 1981
Filed: May 9, 1980
Inventor
Andres Peekna
Assignee (at issue)
W. R. Grace & Co.
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.