IP Library Granted Patent US 6,409,643
Granted Patent Utility
US 6,409,643 · App. 09/297,491

Take-out leading roll, spreader roll, or equivalent for a web-like material

Inventors: Lassi Karvonen, Pekka Koivukunnas
Patented Case View Patent ↗
Granted: Jun 25, 2002 Filed: Jul 2, 1999
Inventors
Lassi Karvonen
Pekka Koivukunnas
Assignee (at issue)
Valmet Aktiebolag

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 6,409,643
App. No.
09/297,491
Filed
1999-07-02
Granted
2002-06-25
Kind
B1