Granted Patent
Utility
US 4,888,922 · App. 07/233,089
Setting hoist anchors in poured concrete structures
Inventor:
Harry B. Lancelot, III
Patented Case
View Patent ↗
Granted: Dec 26, 1989
Filed: Aug 15, 1988
Inventor
Harry B. Lancelot, III
Assignee (at issue)
Richmond Screw Anchor Company
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.