Patent Leaderboard
USPTO Patent Rankings Data through Dec 31, 2025
Home › Method of forming a double upset tube assembly

Method of forming a double upset tube assembly

US Patent 4980961 · Granted Jan 1, 1991

Assignee

Inventors

View full patent text on Google Patents →

More Patents by These Inventors

Zone heating apparatus1995
Apparatus and method for selectively forming a thickened edge on a plate of form1992
Apparatus and method for selectively forming a thickened edge on a plate of form1991
Method and apparatus for tube expansion1990