Granted Patent
Utility
US 4,496,821 · App. 06/405,987
Transformer for robot arms
Inventors:
Peter H. Burgher, Raymond F. Marsden
Patented Case
View Patent ↗
Granted: Jan 29, 1985
Filed: Aug 6, 1982
Inventors
Peter H. Burgher
Raymond F. Marsden
Assignee (at issue)
Marelco Power Systems, 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.