Inventor · disambiguated record
John A. Callahan
Also filed as: CALLAHAN JOHN A
3 granted patents·16 citations·filing 1976–1978
64Inventor score
Top patents by PatentIndex Score
3 records- 0141US4100400AGasoline pump price encoderRF PRODUCTS CORP·Filed 1976·Granted Jul 11, 1978·10 cites·6 claims
- 0234US4109777ATicket printerRES FUELS INC·Filed 1976·Granted Aug 29, 1978·5 cites·6 claims
- 0323US4242575AGasoline pump digital price encoderRF PRODUCTS CORP·Filed 1978·Granted Dec 30, 1980·1 cites·3 claims
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Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →