4. Radiant energy
  5. Photocells; circuits and apparatus
  6. Flame light source

John M. McClelland

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High temperature resistant flame detector

Radiant energy – Photocells; circuits and apparatus – Flame light source
Patent

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Multi-speed ratio apparatus to control shaft output

Machine element or mechanism – Gearing – In series plural interchangeably locked nonplanetary units
Reexamination Certificate

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Profile ID: LFUS-PAI-P-1017458

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