Granted Patent
Utility
US 5,025,591 · App. 07/497,487
Varying radius helical cable spool for powered vehicle door systems
Inventors:
Daniel L. DeLand, Douglas L. Semke
Patented Case
View Patent ↗
Granted: Jun 25, 1991
Filed: Mar 22, 1990
Inventors
Daniel L. DeLand
Douglas L. Semke
Assignee (at issue)
Masco Industries, 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.