Granted Patent
Utility
US 4,213,486 · App. 05/958,310
Coated pipe and process for making same
Inventors:
Carlos M. Samour, Earl G. Jackson, Samuel Thomas, Louie E. Davidson
Patented Case
View Patent ↗
Granted: Jul 22, 1980
Filed: Nov 6, 1978
Inventors
Carlos M. Samour
Earl G. Jackson
Samuel Thomas
Louie E. Davidson
Assignee (at issue)
The Kendall Company LP
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.