IP Library › Granted Patent US 5,931,447
Granted Patent Utility
US 5,931,447 · App. 09/082,976

Laying air for parquet flooring

Inventors: Ernst Butschbacher, Hans Roesch
Patented Case View Patent ↗
Granted: Aug 3, 1999 Filed: May 21, 1998
Inventors
Ernst Butschbacher
Hans Roesch
Assignee (at issue)
Bessey & Sohn GmbH & Co. KG

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 5,931,447
App. No.
09/082,976
Filed
1998-05-21
Granted
1999-08-03
Kind
A