IP Library › Granted Patent US 5,420,649
Granted Patent Utility
US 5,420,649 · App. 08/093,186

Diving mask with improved field of vision

Inventor: John E. Lewis
Patented Case View Patent ↗
Granted: May 30, 1995 Filed: Jul 16, 1993
Inventor
John E. Lewis

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 5,420,649
App. No.
08/093,186
Filed
1993-07-16
Granted
1995-05-30
Kind
A