Granted Patent
Utility
US 6,691,607 · App. 09/997,712
High and low temperature gas actuated cylinder
Inventors:
Oskar F. Vatterott, Bryan Vatterott
Patented Case
View Patent ↗
Granted: Feb 17, 2004
Filed: Nov 30, 2001
Inventors
Oskar F. Vatterott
Bryan Vatterott
Assignee (at issue)
Progressive Pneumatics 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.