IP Library › Granted Patent US 4,815,662
Granted Patent Utility
US 4,815,662 · App. 07/123,944

Stream propelled rotary stream sprinkler unit with damping means

Inventor: Edwin J. Hunter
Patented Case View Patent ↗
Granted: Mar 28, 1989 Filed: Nov 23, 1987
Inventor
Edwin J. Hunter

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 4,815,662
App. No.
07/123,944
Filed
1987-11-23
Granted
1989-03-28
Kind
A