IP Library › Granted Patent US 5,111,477
Granted Patent Utility
US 5,111,477 · App. 07/521,981

Fragrance diffuser

Inventors: Ken Muderlak, Patrick Maloney
Patented Case View Patent ↗
Granted: May 5, 1992 Filed: May 7, 1990
Inventors
Ken Muderlak
Patrick Maloney
Assignee (at issue)
Technical Concepts, LLC

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 5,111,477
App. No.
07/521,981
Filed
1990-05-07
Granted
1992-05-05
Kind
A