Inventor · disambiguated record
Harold W. Schaefer
Also filed as: HOHULIN SAMUEL E · MEYER ROBERT B · SCHAEFER HAROLD W
8 granted patents·148 citations·filing 1977–1980
88Inventor score
Top patents by PatentIndex Score
8 records- 0186US4249281ASelf-propelled vacuum cleanerNAT UNION ELECTRIC CORP·Filed 1979·Granted Feb 10, 1981·52 cites·11 claims
- 0274USD261515SPressure spray carpet cleanerNAT UNION ELECTRIC CORPORATION·Filed 1979·Granted Oct 27, 1981·12 cites·1 claims
- 0374US4209873ABrush-beater for a vacuum cleaner and method for making the sameNAT UNION ELECTRIC CORP·Filed 1978·Granted Jul 1, 1980·36 cites·18 claims
- 0461US4312542AMethod of making a brush-beater for a vacuum cleanerNAT UNION ELECTRIC CORP·Filed 1980·Granted Jan 26, 1982·17 cites·7 claims
- 0560USD252332SWide track vacuum cleaner housingNAT UNION ELECTRIC CORPORATION·Filed 1977·Granted Jul 10, 1979·7 cites·1 claims
- 0648US4311493AVacuum cleaner bag assemblyNAT UNION ELECTRIC CORP·Filed 1980·Granted Jan 19, 1982·12 cites·16 claims
- 0745US4240812AVacuum cleaner bag assemblyNAT UNION ELECTRIC CORP·Filed 1979·Granted Dec 23, 1980·11 cites·3 claims
- 0833USD253891SCasing for a vacuum cleanerNAT UNION ELECTRIC CORPORATION·Filed 1977·Granted Jan 8, 1980·1 cites·1 claims
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Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →