4. Traversing hoists
  5. Having horizontally swinging boom or bridge
  6. And vertically swinging

John R. Jamieson

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Alarm device

Communications: electrical – Condition responsive indicating system – Specific condition
Patent

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Derrick crane

Traversing hoists – Having horizontally swinging boom or bridge – And vertically swinging
Patent

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Jet propelled watercraft and a simplified low cost drive therefo

Marine propulsion – Jet drive
Patent

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Steering gear for ships

Ships – Steering mechanism – Fluid pressure
Patent

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Profile ID: LFUS-PAI-P-780484

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