TREA

Order telegraph apparatus, i.e. means for transmitting one of a finite number of different orders at the discretion of the user

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Industry

  • CPC
  • G08B9/00
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Parent Industries

GPHYSICS G08Signaling G08BSIGNALLING OR CALLING SYSTEMS ORDER TELEGRAPHS ALARM SYSTEMS

Current Industry

G08B9/00Order telegraph apparatus, i.e. means for transmitting one of a finite number of different orders at the discretion of the user

Sub Industries

G08B9/02Details G08B9/04Means for recording operation of the apparatus G08B9/06Means for indicating disagreement between orders given and those carried out G08B9/08mechanical G08B9/10using ratchet G08B9/12using rotary shaft G08B9/14hydraulic pneumatic G08B9/16using ratchet G08B9/18by varying displacement of the fluid G08B9/20by varying pressure of the fluid
Industries

Patents Grantslast 30 patents

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