Patent Leaderboard
USPTO Patent Rankings Data through Dec 31, 2025
Home › Method for manufacturing large diameter plastic pipe

Method for manufacturing large diameter plastic pipe

US Patent 4869766 · Granted Sep 26, 1989

Estimated economic value: $1,078,000 ⓘ

Assignee

Inventors

View full patent text on Google Patents →

More Patents by These Inventors

Membrane welding apparatus including a visual seam marker2003
Flexible conduit system1987
Electrical outlet box1986
Electrical outlet box and method of manufacturing same1986
Flexible conduit system1985
Large diameter plastic pipe1985
Large diameter plastic pipe1985
Large diameter plastic pipe1985
Floor or bench mounted conduit cutting device1984
Flexible conduit system1984
Connector fitting for connecting corrugated conduit sections1984
Flexible conduit system1984