Granted Patent
Utility
US 4,552,539 · App. 06/614,108
Hydroplane apparatus
Inventors:
James M. Hoenstine, Thomas E. Ray
Patented Case
View Patent ↗
Granted: Nov 12, 1985
Filed: May 24, 1984
Inventors
James M. Hoenstine
Thomas E. Ray
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.