Patent Leaderboard
USPTO Patent Rankings Data through Dec 31, 2025
Home › Fabrication method for a funnel liner

Fabrication method for a funnel liner

US Patent 5611979 · Granted Mar 18, 1997

Assignee

Inventors

View full patent text on Google Patents →

More Patents by These Inventors

Method of lining channels2001
Double walled pipe, jacking method and pipe end structure of leading pipe2000
Double walled pipe, jacking method and pipe end structure of leading pipe1999
Double walled pipe, jacking method and pipe end structure of leading pipe1997
Method for injecting lubricant or back-filling material into a space between the1996
Method for controlling the direction of a shield tunneling machine and an appara1996
Method for injecting lubricant and filler in the pipe-jacking method1996
Air vent device for fuel tank on vehicle1986
System for repairing joints in pipes laid underground1986