IP Library Granted Patent US 4,909,592
Granted Patent Utility
US 4,909,592 · App. 07/250,897

Communication cable having water blocking provisions in core

Inventors: Candido J. Arroyo, Paul F. Gagen
Patented Case View Patent ↗
Granted: Mar 20, 1990 Filed: Sep 29, 1988
Inventors
Candido J. Arroyo
Paul F. Gagen
Assignee (at issue)
American Telephone and Telegraph Company, AT&T Bell Laboratories

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 4,909,592
App. No.
07/250,897
Filed
1988-09-29
Granted
1990-03-20
Kind
A