Granted Patent
Utility
US 4,660,862 · App. 06/719,268
Pipe lap joint with improved pull-apart strength
Inventors:
Thomas R. Cassel, Scott T. Cassel
Patented Case
View Patent ↗
Granted: Apr 28, 1987
Filed: Apr 2, 1985
Inventors
Thomas R. Cassel
Scott T. Cassel
Assignee (at issue)
BKS Company, 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.