IP Library › Granted Patent US 4,801,144
Granted Patent Utility
US 4,801,144 · App. 07/091,750

Hockey puck

Inventors: Anthony De Masi, Jr., John A. McMahon, 3rd
Patented Case View Patent ↗
Granted: Jan 31, 1989 Filed: Sep 1, 1987
Inventors
Anthony De Masi, Jr.
John A. McMahon, 3rd
Assignee (at issue)
Roll-A-Puck Limited

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.

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Quick Facts
Patent No.
US 4,801,144
App. No.
07/091,750
Filed
1987-09-01
Granted
1989-01-31
Kind
A