Granted Patent
Utility
US 6,749,538 · App. 09/746,184
Interlock apparatus for fitness equipment
Inventors:
Michael D. Slawinski, Phillip Wills, Henrik B. Christophersen
Patented Case
View Patent ↗
Granted: Jun 15, 2004
Filed: Dec 19, 2000
Inventors
Michael D. Slawinski
Phillip Wills
Henrik B. Christophersen
Assignee (at issue)
Michael D. Slawinski
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.