USPC D21

U.S. Patent Classification D21 was a patent technology category for sports and toys.

Classification tree:

• USPC D21/398 Toy for children
  • USPC D21/436 Aerial: Design for toy that navigates the earth s atmosphere or outer space.
    • USPC D21/437 Boomerang: Design for a curved air born missal that returns to the thrower when thrown.
    • USPC D21/438 Animate simulation: Design that includes an ornamental feature or features that shows the ornamental appearance of an animal either as applied ornamentation or form.
      • USPC D21/439 Inflated (e.g., balloon): Design for balloonlike object that encloses gas and simulates an animal.
    • USPC D21/440 Inflated (e.g., balloon): Design for balloon-like object that encloses gas.
    • USPC D21/441 Rotary wing or disc: Design that includes wing member that spins or rotates, or a substantially flat, circular, aerial toy.
      • USPC D21/442 Helicopter: Design that includes a propeller member mounted in a horizontal configuration.
      • USPC D21/443 Disc shape: Design that is substantially flat and circular in overall form. Includes frisbie-type aerial toy.
        • USPC D21/444 Pierced: Design that includes openings or holes in the body. (possibly referring to aerobie toy)
    • USPC D21/445 Kite: Design that consists of a light framework intended to be flown in the wind and controlled by an attached cord.
      • USPC D21/446 Including rotary wing, a revolving, flat, projecting part.
    • USPC D21/447 Aircraft or spacecraft, including toy gliders
      • USPC D21/448 Jet-propelled aircraft
      • USPC D21/449 Formed of planar or sheet material: Design that consists of substantially flat members or parts, including paper airplane
      • USPC D21/450 Including propeller, a blade-type, revolving device for propulsion
      • USPC D21/451 Spacecraft or satellite
      • USPC D21/452 Rocket or missile-type propulsion

References

Patents in category USPC D21

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Enclosing categories	USPC
Subcategories	USPC D21/445, USPC D21/449
Keywords	toys, sports, Fun
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