Granted Patent
Utility
US 4,553,767 · App. 06/578,473
Roller skate with integral ratchet means
Inventors:
Frederick B. Robjent, Reuben B. Klamer
Patented Case
View Patent ↗
Granted: Nov 19, 1985
Filed: Feb 9, 1984
Inventors
Frederick B. Robjent
Reuben B. Klamer
Assignee (at issue)
The Quaker Oats Company
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.