Granted Patent
Utility
US 6,754,943 · App. 09/474,693
Method of manufacturing an axially collapsible driveshaft assembly
Inventors:
Daniel C. Perry, Christopher C. Cheney
Patented Case
View Patent ↗
Granted: Jun 29, 2004
Filed: Dec 29, 1999
Inventors
Daniel C. Perry
Christopher C. Cheney
Assignee (at issue)
Torque-Traction Technologies LLC
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.