IP Library Granted Patent US 4,877,424
Granted Patent Utility
US 4,877,424 · App. 07/160,669

Method and apparatus for separating solids from a solids-gas mixture

Inventors: Markku Perkola, Ilkka Seppa
Patented Case View Patent ↗
Granted: Oct 31, 1989 Filed: Feb 26, 1988
Inventors
Markku Perkola
Ilkka Seppa

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 4,877,424
App. No.
07/160,669
Filed
1988-02-26
Granted
1989-10-31
Kind
A