IP Library › Granted Patent US 5,992,457
Granted Patent Utility
US 5,992,457 · App. 08/881,019

Single-lever mixing valve with override

Inventors: Jurgen Humpert, Eckhard Gransow, Harald Dickel
Patented Case View Patent ↗
Granted: Nov 30, 1999 Filed: Jun 23, 1997
Inventors
Jurgen Humpert
Eckhard Gransow
Harald Dickel
Assignee (at issue)
Friedrich Grohe AG

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 5,992,457
App. No.
08/881,019
Filed
1997-06-23
Granted
1999-11-30
Kind
A