John E. Bohan

Status indicator for self-energizing burner control system

Pilot flame powered burner controller with remote control operation

Self-energizing burner control system for a fuel burner

Pressure proving gas valve

Low voltage driven oscillator circuit

Flame rectification sensor employing pulsed excitation

Interrupted power hot wire gas ignition control system

Electronic aquastat in immersible capsule

Functional check for a hot surface ignitor element

Burner control system with continuous check of hot surface ignitor during run cycle