IP Library › Granted Patent US 4,888,113
Granted Patent Utility
US 4,888,113 · App. 07/291,354

Magnetic water treatment device

Inventor: Robert R. Holcomb
Patented Case View Patent ↗
Granted: Dec 19, 1989 Filed: Dec 29, 1988
Inventor
Robert R. Holcomb

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 4,888,113
App. No.
07/291,354
Filed
1988-12-29
Granted
1989-12-19
Kind
A