Inventor · disambiguated record
Norman G. Gratke
Also filed as: GRATKE NORMAN G
3 granted patents·94 citations·filing 1988–1989
75Inventor score
Files withBRADY CO W H3
Top patents by PatentIndex Score
3 records- 0179US4920342AMembrane switchcores with high resisitivity ink circuitsBRADY CO W H·Filed 1988·Granted Apr 24, 1990·34 cites·5 claims
- 0279US4876461ASelf-referencing capacitive key cell structure and switchcore matrices formed therefromBRADY CO W H·Filed 1989·Granted Oct 24, 1989·27 cites·10 claims
- 0379US4857684ACapacitance membrane switchcore with intertrace capacitive coupling and/or intratrace capacitive couplingBRADY CO W H·Filed 1988·Granted Aug 15, 1989·33 cites·39 claims
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Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →