Granted Patent
Utility
US 4,780,977 · App. 07/093,720
Page turning apparatus
Inventors:
James M. Howard, Constantine Tsoucalas
Patented Case
View Patent ↗
Granted: Nov 1, 1988
Filed: Sep 8, 1987
Inventors
James M. Howard
Constantine Tsoucalas
Assignee (at issue)
Maddak, Inc.
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.