| Patents for B64C 21 - Influencing air-flow over aircraft surfaces by affecting boundary-layer flow (1,724) |
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| 10/07/1980 | US4226388 Toy parachute releasable from a kite string |
| 09/30/1980 | US4225372 Surface finishing |
| 09/30/1980 | US4225102 Aerodynamic side-force alleviator means |
| 09/02/1980 | US4220297 Finlet injector |
| 08/21/1980 | WO1980001673A1 Surface structure of a surface adapted for movement relative to a fluid |
| 08/12/1980 | US4216924 Helicopter |
| 07/29/1980 | US4214722 Pollution reducing aircraft propulsion |
| 07/09/1980 | EP0013272A1 Improved helicopter |
| 04/22/1980 | CA1076091A1 Surface finishing |
| 12/25/1979 | US4180290 Propelled apparatus having surface means for developing increased propulsion efficiencies |
| 10/02/1979 | US4169567 Helicopter lifting and propelling apparatus |
| 03/27/1979 | US4146202 Aircraft suction system for laminar flow control |
| 03/27/1979 | US4146197 Boundary layer scoop for the enhancement of Coanda effect flow deflection over a wing/flap surface |
| 11/28/1978 | US4127244 Rotary wing aircraft mast arrangement |
| 10/03/1978 | US4117995 Aircraft wing lift augmentation device |
| 08/29/1978 | US4109885 Vertical take-off and landing aircraft |
| 07/11/1978 | US4099691 Boundary layer control system for aircraft |
| 06/27/1978 | US4097008 Cargo handling system for aircraft |
| 07/05/1977 | US4033526 Aerodynamic flow body |
| 06/28/1977 | US4032089 Surface finishing |
| 04/26/1977 | US4019696 Method of and apparatus for enhancing Coanda flow attachment over a wing and flap surface |
| 08/17/1976 | US3974987 Cascade effect blown flap |
| 04/20/1976 | US3951360 Device for regulating and recovering the boundary layer over the surface of a body such as an aircraft in flight |
| 03/02/1976 | US3941335 Automatic boundary layer control in an ejector wing aircraft |