Granted Patent
Utility
US 4,655,299 · App. 06/784,261
Angle deviation tool
Inventor:
William N. Schoeffler
Patented Case
View Patent ↗
Granted: Apr 7, 1987
Filed: Oct 4, 1985
Inventor
William N. Schoeffler
Assignee (at issue)
Petro-Design, 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.