The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Aug. 04, 1998
Filed:
Feb. 22, 1996
Applicant:
Inventor:
Giuseppe Cocito, Via Massimo d'Azeglio, IT;
Assignee:
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
H02G / ;
U.S. Cl.
CPC ...
174 681 ;
Abstract
A duct for housing cables for underground telecommunications networks has one or more tubular elements of a first plastic material, having helical ribs on their inner surface. The ribs may also be formed as inserts into the material of the tubular element.