IP Library › Granted Patent US 4,478,809
Granted Patent Utility
US 4,478,809 · App. 06/459,288

Economizer arrangement

Inventors: Donald R. McAlister, Steven A. Ziebold
Patented Case View Patent ↗
Granted: Oct 23, 1984 Filed: Jan 20, 1983
Inventors
Donald R. McAlister
Steven A. Ziebold
Assignee (at issue)
Monsanto Company

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 4,478,809
App. No.
06/459,288
Filed
1983-01-20
Granted
1984-10-23
Kind
A