Inventor · disambiguated record

Richard L. Learn

Also filed as: LEARN RICHARD L

2 granted patents·28 citations·filing 1978–1978

59Inventor score

Technology areasG04G H03K

Files withEMHART IND2

Top patents by PatentIndex Score

2 records

0182US4213121AChime tone audio system utilizing a piezoelectric transducerEMHART IND·Filed 1978·Granted Jul 15, 1980·24 cites·15 claims
0237US4225856ACircuit means for providing multiple audible signals from an audible tone generator meansEMHART IND·Filed 1978·Granted Sep 30, 1980·4 cites·3 claims

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Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →