Granted Patent
Utility
US 4,023,374 · App. 05/634,273
Repair sleeve for a marine pile and method of applying the same
Inventors:
Ervin A. Colbert, Richard J. Mann, Robert W. Phillips
Patented Case
View Patent ↗
Granted: May 17, 1977
Filed: Nov 21, 1975
Inventors
Ervin A. Colbert
Richard J. Mann
Robert W. Phillips
Assignee (at issue)
Symons 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.