Granted Patent
Utility
US 4,492,666 · App. 06/364,474
Method for forming a protective pipe cap
Inventors:
Wilfried Dreyfuss, Thomas E. Remp, Kurt Muller
Patented Case
View Patent ↗
Granted: Jan 8, 1985
Filed: Mar 31, 1982
Inventors
Wilfried Dreyfuss
Thomas E. Remp
Kurt Muller
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.