IP Library › Granted Patent US 4,110,219
Granted Patent Utility
US 4,110,219 · App. 05/764,828

Reverse osmosis water unit

Inventor: Paul D. Maples
Patented Case View Patent ↗
Granted: Aug 29, 1978 Filed: Feb 2, 1977
Inventor
Paul D. Maples

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 4,110,219
App. No.
05/764,828
Filed
1977-02-02
Granted
1978-08-29
Kind
A