4. Internal-combustion engines
  5. Combined devices
  6. Generating plants

Henry Bergen

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Page-mapped multi-line telephone communication system

Telephonic communications – Multi-line or key substation system with selective switching... – Line status indication or call alerting
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Toroidal cylinder orbiting piston engine

Internal-combustion engines – Combined devices – Generating plants
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Profile ID: LFUS-PAI-P-286283

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