Granted Patent
Utility
US 5,133,335 · App. 07/729,446
Paraffin wax grafting technique and apparatus
Inventors:
Willie D. Crawford, Bill Jacobs
Patented Case
View Patent ↗
Granted: Jul 28, 1992
Filed: Jul 12, 1991
Inventors
Willie D. Crawford
Bill Jacobs
Assignee (at issue)
Champion International Corporation Limited
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.