Inventor · disambiguated record
Donald L. Levoir
Also filed as: LEVOIR DONALD L
3 granted patents·24 citations·filing 1988–1997
68Inventor score
Technology areasB61L
Files withSAFETRAN SYSTEMS CORP3
Top patents by PatentIndex Score
3 records- 0137US5834914ARailroad crossing gate mechanism control systemSAFETRAN SYSTEMS CORP·Filed 1997·Granted Nov 10, 1998·9 cites·7 claims
- 0236US5852350ARailroad crossing gate control system including a separate maintenance relaySAFETRAN SYSTEMS CORP·Filed 1997·Granted Dec 22, 1998·9 cites·7 claims
- 0332US4895325ARailroad gate arm lamp circuitSAFETRAN SYSTEMS CORP·Filed 1988·Granted Jan 23, 1990·6 cites·3 claims
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Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →