Granted Patent
Utility
US 4,807,872 · App. 06/934,670
Child swing with upstanding members in abutting relationship
Inventors:
Raymond Spilman, Jacob A. Krapowicz, Alvin L. Fowler
Patented Case
View Patent ↗
Granted: Feb 28, 1989
Filed: Nov 25, 1986
Inventors
Raymond Spilman
Jacob A. Krapowicz
Alvin L. Fowler
Assignee (at issue)
Cosco, Inc.
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.