IP Library Granted Patent US 4,950,323
Granted Patent Utility
US 4,950,323 · App. 07/002,465

Herbicidal bis-formyl-N-aryl-N'-alkyl ureas and methods of use

Inventor: Charles Kezerian
Patented Case View Patent ↗
Granted: Aug 21, 1990 Filed: Jan 12, 1987
Inventor
Charles Kezerian

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 4,950,323
App. No.
07/002,465
Filed
1987-01-12
Granted
1990-08-21
Kind
A