Granted Patent
Utility
US 5,015,273 · App. 07/494,704
Foam breaker and method
Inventors:
Billy E. Hamilton, Brian K. Moore, Donald E. Newton
Patented Case
View Patent ↗
Granted: May 14, 1991
Filed: Mar 16, 1990
Inventors
Billy E. Hamilton
Brian K. Moore
Donald E. Newton
Assignee (at issue)
Camco 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.