Granted Patent
Utility
US 6,834,404 · App. 10/470,286
Lifting and lowering apparatus
Inventor:
Richard Edmond Fletcher
Patented Case
View Patent ↗
Granted: Dec 28, 2004
Filed: Nov 6, 2003
Inventor
Richard Edmond Fletcher
Assignee (at issue)
MANGAR INTERNATIONAL (HOLDINGS) 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.