Granted Patent
Utility
US 4,718,049 · App. 06/821,905
Pre-loaded vibrator assembly with mechanical lock
Inventors:
John Crowell, James Teske
Patented Case
View Patent ↗
Granted: Jan 5, 1988
Filed: Jan 23, 1986
Inventors
John Crowell
James Teske
Assignee (at issue)
Western Atlas International, 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.