AU 90.3

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Australian patent classification 90.3 circa 1911 denoted "Flying machines", in particular:[1]

General design of flying machines heavier than air.

Kites, aeroplanes, biplanes; steering and control.
Helicopters and other lifting devices.

Designs with reciprocating wings and hovering combinations.

And additional notes:

  • Propelled or guided balloons are placed in AU 90.1
  • Gyroscopic control, see AU 61.2
  • Hydroplane blades, see AU 92.6

References

  1. Australian Official Journal of Patents: Classification of Manufactures: Being Subject-matter for Patents of Invention as Stated in the Statute of Monopolies, A.D. 1623: Numerical Subject List and Word Index (1911), p. 206.
Enclosing categories AU 90
Subcategories
Keywords Airplane, Biplane, Helicopter, Flapping, Hybrid
Start year
End year


This wiki has 34 patents in category "AU 90.3".

Patents in category AU 90.3