IP Library › Granted Patent US 5,257,834
Granted Patent Utility
US 5,257,834 · App. 07/745,612

Pipe coupling

Inventors: Siegmung Zeidler, Manfred Kruger
Patented Case View Patent ↗
Granted: Nov 2, 1993 Filed: Aug 15, 1991
Inventors
Siegmung Zeidler
Manfred Kruger
Assignee (at issue)
Rasmussen GmbH

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 5,257,834
App. No.
07/745,612
Filed
1991-08-15
Granted
1993-11-02
Kind
A