Patent Leaderboard
USPTO Patent Rankings Data through Dec 31, 2025
Home › Split-ring manhole cover support

Split-ring manhole cover support

US Patent 5184912 · Granted Feb 9, 1993

Assignee

Inventors

View full patent text on Google Patents →

More Patents by These Inventors

Manhole frame assembly1999
Anchor for utility access hole support insert1997
Adjustable manhole cover support with shield1997
Method and apparatus for anchoring a utility grate cover1997
Anchor for manhole cover support1994
Sturdy adjustable manhole cover support1994
Manhole cover support with flange borne on its own base1992
Stiffening flanges for deformation resistance of manhole cover support1992
Stiffening flanges for deformation resistance of manhole cover support1992
Adjustable manhole cover support with spanners1992
Manhole cover support with topside flange and inclined seat1991
Support for catch basin cover1991