Inventor · disambiguated record
Hansruedi Spiess
Also filed as: SPIESS HANSRUEDI
10 granted patents·272 citations·filing 1988–1990
91Inventor score
Top patents by PatentIndex Score
10 records- 0183US4925337AManhole coveringVON ROLL AG·Filed 1988·Granted May 15, 1990·46 cites·5 claims
- 0282US5071177ALocking device for the positive holding of a cover or grate in a frameVON ROLL AG·Filed 1988·Granted Dec 10, 1991·49 cites·22 claims
- 0371US4952094AGround water drainVON ROLL AG·Filed 1989·Granted Aug 28, 1990·34 cites·12 claims
- 0470US5017039ACovering for a ground openingSPIESS HANSRUEDI·Filed 1989·Granted May 21, 1991·33 cites·6 claims
- 0568US4873795ACovering for a ground openingVON ROLL AG·Filed 1988·Granted Oct 17, 1989·26 cites·14 claims
- 0666US5056955ALocking device for coverings for manholes and other ground openingsVON ROLL AG·Filed 1990·Granted Oct 15, 1991·33 cites·20 claims
- 0760US5340232AManhole coverVON ROLL AG·Filed 1990·Granted Aug 23, 1994·22 cites·21 claims
- 0856US5160213ACovering for a ground openingVON ROLL AG·Filed 1990·Granted Nov 3, 1992·21 cites·7 claims
- 0932US4909664AArrangement for draining liquid collecting on a ground surfaceVON ROLL AG·Filed 1988·Granted Mar 20, 1990·6 cites·4 claims
- 1029US4904120AFrame for forming coverings on ground openingsVON ROLL AG·Filed 1988·Granted Feb 27, 1990·2 cites·15 claims
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Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →