IP Library › Granted Patent US 5,499,870
Granted Patent Utility
US 5,499,870 · App. 08/446,033

Multiscrew, continuous mixing machine for plasticizable compounds

Inventor: Siegward Rockstedt
Patented Case View Patent ↗
Granted: Mar 19, 1996 Filed: Jun 2, 1995
Inventor
Siegward Rockstedt
Assignee (at issue)
Maschinenfabrik S. Rockstedt 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 5,499,870
App. No.
08/446,033
Filed
1995-06-02
Granted
1996-03-19
Kind
A