Inventor · disambiguated record
William M. Copeland
Also filed as: COPELAND WILLIAM M · SHALLENBERG ROBERT L
3 granted patents·84 citations·filing 1978–1981
74Inventor score
Files withSERVICEMASTER IND3
Top patents by PatentIndex Score
3 records- 0175US4198721ACombination motor and auxiliary mechanism actuatorSERVICEMASTER IND·Filed 1978·Granted Apr 22, 1980·19 cites·7 claims
- 0269US4429432ASanitizer attachment for a mobile floor cleanerSERVICEMASTER IND·Filed 1981·Granted Feb 7, 1984·36 cites·10 claims
- 0365US4174977AApparatus and method for mopping floorsSERVICEMASTER IND·Filed 1978·Granted Nov 20, 1979·29 cites·11 claims
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Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →