Granted Patent
Utility
US 6,467,546 · App. 09/809,406
Drop ball sub and system of use
Inventors:
Jerry P. Allamon, Kenneth Waggener
Patented Case
View Patent ↗
Granted: Oct 22, 2002
Filed: Mar 14, 2001
Inventors
Jerry P. Allamon
Kenneth Waggener
Assignees (at issue)
Jerry P. Allamon
Shirley C. Allamon
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.