CA 244/17

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CA 244/17 is a Canadian patent category for helicopters with a "counter-torque and/or steering device."[1][2][3]

References

  1. ↑ Subclasses of patent class CA 244
  2. ↑ Definition of subclass CA 244/17
  3. ↑ List of Canadian patents in subclass CA 244/17 filed before 1925

This wiki has 0 patents in category "CA 244/17".



Enclosing categories CA 244/15
Subcategories
Keywords Helicopter, Control
Start year
End year
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