US PATENT SUBCLASS 244 / 4 R
AIRCRAFT, HEAVIER-THAN-AIR

Current as of: June, 1999
Click HD for Main Headings
Click for All Classes

Internet Version by PATENTEC © 1999      Terms of Use


244 /   HD   AERONAUTICS

4 RAIRCRAFT, HEAVIER-THAN-AIR {14}
5  DF  .~> Airplanes, weight diminished by bouyant gas
6  DF  .~> Airplane and helicopter sustained {1}
8  DF  .~> Airplane and auto-rotating wing sustained
9  DF  .~> Airplane and paddle wheel sustained
10  DF  .~> Airplane and cylindrical rotor sustained
11  DF  .~> Airplane and beating wing sustained
12.1  DF  .~> Airplane and fluid sustained {5}
13  DF  .~> Airplane sustained {3}
17.11  DF  .~> Helicopter or auto-rotating wing sustained, i.e., gyroplanes {7}
19  DF  .~> Paddle wheel sustained {1}
21  DF  .~> Cylindrical rotor sustained
22  DF  .~> Beating wing sustained
23 R  DF  .~> Fluid sustained {4}
4 A  DF  .~> Body attached

Unofficial Alpha Subclasses: R A

DEFINITION

Classification: 244/4

(under the class definition) Miscellaneous aeronautical machines which ordinarily weigh more than the air which they displace, and depend therefore on some aerodynamic action for their sustentation. This includes combination types not provided for below.

(1) Note. This subclass also includes machines strapped directly to the body of a person, but propelled by mechanical means.