Granted Patent
Utility
US 6,767,115 · App. 10/264,105
Pneumatic telescoping mast
Inventor:
Paul Bradford Blackwelder
Patented Case
View Patent ↗
Granted: Jul 27, 2004
Filed: Oct 3, 2002
Inventor
Paul Bradford Blackwelder
Assignee (at issue)
The Will-Burt Company
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.