Patent Leaderboard
USPTO Patent Rankings Data through Dec 31, 2025
Home › Composite pipe having an integral bell end

Composite pipe having an integral bell end

US Patent 4240470 · Granted Dec 23, 1980

Estimated economic value: $226,000 ⓘ

Assignee

No assignee recorded.

Inventors

View full patent text on Google Patents →

More Patents by These Inventors

Externally adjustable directional luminaire2009
Media position sensing system having a plurality of apertures in the media edge 1997
Mounting system for light fixture1997
Microbiocidal composition1995
Pinch roller for pen plotters including platen bridge to prevent media snag1995
Teaching device for stringed instruments1995
Pedestal-mounted case for a pen plotter1993
Self-adjusting motor mount for drive motors of a pen plotter1992
Carriage coupling device system for pen plotter1989
Plotter pen presence and type identification system1989
Pinch roller assembly1988
Plotter pen up/down control system1988