Inventor · disambiguated record
John M. Helft
Also filed as: HELFT JOHN M
2 granted patents·61 citations·filing 1980–1981
65Inventor score
Top patents by PatentIndex Score
2 records- 0167US4422068AIntrusion alarm system for preventing actual confrontation with an intruderHELFT JOHN M·Filed 1981·Granted Dec 20, 1983·36 cites·20 claims
- 0263US4290059ALiquid level alarm for remotely indicating when less than a predetermined quantity of fuel oil remains in a storage tank and method for installing the sameNOYES WALTER O·Filed 1980·Granted Sep 15, 1981·25 cites·12 claims
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Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →