Inventor · disambiguated record
Eric Ditcher
Also filed as: DITCHER ERIC · DITCHER ERIC A
4 granted patents·199 citations·filing 1983–1986
82Inventor score
Files withA LOK PROD4
Top patents by PatentIndex Score
4 records- 0187US4751799AMethod and apparatus for lining manhole assemblies and the likeA LOK PROD·Filed 1986·Granted Jun 21, 1988·59 cites·11 claims
- 0287US4621941AManhole riser having integral flexible waterlock for manhole covers and having a water tight seal for sealed manhole coversA LOK PROD·Filed 1985·Granted Nov 11, 1986·56 cites·30 claims
- 0383US4540310AManhole riser and cooperating sleeve to provide a waterlock for manhole structuresA LOK PROD·Filed 1983·Granted Sep 10, 1985·41 cites·15 claims
- 0482US4737220AMethod of making a manhole riser having integral flexible waterlock for manhole covers and having a water tight seal for sealed manhole coversA LOK PROD·Filed 1986·Granted Apr 12, 1988·43 cites·11 claims
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Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →