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Inventor
FARNHAM WILFRED L
US
2 patents
⚠️ This page may combine multiple inventors who share the name “FARNHAM WILFRED L”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.
SAB HARMON IND INC
1 patent
US4581700A
Apr 8, 1986
Processing system for grade crossing warning
SAB HARMON IND INC
40 citations
85
HARMON INDUSTRIES
1 patent
US4934633A
Jun 19, 1990
Crossing control unit
HARMON INDUSTRIES
22 citations
79