Granted Patent
Utility
US 4,491,492 · App. 06/437,244
Methods of and apparatus for applying a sheet to a rigid board
Inventor:
Jack C. Hetherington
Patented Case
View Patent ↗
Granted: Jan 1, 1985
Filed: Oct 28, 1982
Inventor
Jack C. Hetherington
Assignee (at issue)
AT&T Technologies Incorporated
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.