Granted Patent
Utility
US 4,515,355 · App. 06/390,150
Sheet metal workholder utilizing linear wedge action
Inventor:
James R. Hunter
Patented Case
View Patent ↗
Granted: May 7, 1985
Filed: Jun 21, 1982
Inventor
James R. Hunter
Assignee (at issue)
Warner & Swasey
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.