IP Library Granted Patent US 4,694,591
Granted Patent Utility
US 4,694,591 · App. 06/723,197

Toe off athletic shoe

Inventors: Howard Banich, Daniel E. Norton
Patented Case View Patent ↗
Granted: Sep 22, 1987 Filed: Apr 15, 1985
Inventors
Howard Banich
Daniel E. Norton
Assignee (at issue)
Wolverine World Wide, 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.

Order Certified Copies
Most orders are placed with the USPTO same day — all within 24 business hours.
Order via The Patent Place →
Pre-filled with this patent's details
Quick Facts
Patent No.
US 4,694,591
App. No.
06/723,197
Filed
1985-04-15
Granted
1987-09-22
Kind
A