Assignee
SELFLEVEL COVERS JERSEY LTD
GB·4 granted patents·22 citations·filing 1982–1983
Technology mixE02D4
Top patents by PatentIndex Score
4 records- 0145US4508470AManhole/access cover and frame assembliesSELFLEVEL COVERS JERSEY LTD·Filed 1983·Granted Apr 2, 1985·10 cites·4 claims
- 0239US4498804AManhole/access cover and frame assembliesSELFLEVEL COVERS JERSEY LTD·Filed 1983·Granted Feb 12, 1985·7 cites·12 claims
- 0331US4549833AFrame members for supporting covers or gratingsSELFLEVEL COVERS JERSEY LTD·Filed 1982·Granted Oct 29, 1985·4 cites·7 claims
- 0428US4483110AMethods of installing frames for access pits and manholesSELFLEVEL COVERS JERSEY LTD·Filed 1982·Granted Nov 20, 1984·1 cites·8 claims
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