Granted Patent
Utility
US 4,903,611 · App. 07/320,527
Anchor spreader apparatus and method
Inventor:
John D. Holley
Patented Case
View Patent ↗
Granted: Feb 27, 1990
Filed: Mar 8, 1989
Inventor
John D. Holley
Assignee (at issue)
Holley Engineering Company, 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.