IP Library › Granted Patent US 5,804,146
Granted Patent Utility
US 5,804,146 · App. 08/810,400

Chemical oxygen generator

Inventors: Harald Heyer, Udo Burchardt, Rainer Ernst
Patented Case View Patent ↗
Granted: Sep 8, 1998 Filed: Mar 4, 1997
Inventors
Harald Heyer
Udo Burchardt
Rainer Ernst
Assignee (at issue)
DRAGERWERK AKTIEGESELLSCHAFT

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 5,804,146
App. No.
08/810,400
Filed
1997-03-04
Granted
1998-09-08
Kind
A