IP Library › Granted Patent US 4,897,326
Granted Patent Utility
US 4,897,326 · App. 06/835,479

Process to manufacture printed circuit boards

Inventor: Giuseppe Marengo
Patented Case View Patent ↗
Granted: Jan 30, 1990 Filed: Mar 3, 1986
Inventor
Giuseppe Marengo
Assignee (at issue)
Telettra - Telefonia Elettronica e Radio S.p.A.

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 4,897,326
App. No.
06/835,479
Filed
1986-03-03
Granted
1990-01-30
Kind
A