Granted Patent
Utility
US 4,325,015 · App. 06/151,899
Dual motor drive for machine tool
Inventor:
Francis E. Heiberger
Patented Case
View Patent ↗
Granted: Apr 13, 1982
Filed: May 21, 1980
Inventor
Francis E. Heiberger
Assignee (at issue)
Danly Machine Corporation
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.