Granted Patent
Utility
US 6,689,983 · App. 10/083,101
Torch handle gas control
Inventors:
Kevin Horner-Richardson, Shiyu Chen, Roger W. Hewett, Joseph P. Jones, Kevin J. Kinderson, Darrin H. MacKenzie, Fred Rogers
Patented Case
View Patent ↗
Granted: Feb 10, 2004
Filed: Feb 26, 2002
Inventors
Kevin Horner-Richardson
Shiyu Chen
Roger W. Hewett
Joseph P. Jones
Kevin J. Kinderson
Darrin H. MacKenzie
Fred Rogers
Assignee (at issue)
Thermal Dynamics Corporation
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.