Number | Name | Date | Kind |
---|---|---|---|
4068132 | Bardekoff | Jan 1978 | A |
4220870 | Kelly | Sep 1980 | A |
4265086 | Bahrenburg | May 1981 | A |
4285481 | Biscomb | Aug 1981 | A |
4340822 | Gregg | Jul 1982 | A |
4410806 | Brulle | Oct 1983 | A |
4550259 | Bertels | Oct 1985 | A |
4651017 | Longrigg | Mar 1987 | A |
4735552 | Watson | Apr 1988 | A |
5146096 | McConachy | Sep 1992 | A |
5182458 | McConachy | Jan 1993 | A |
5876181 | Shin | Mar 1999 | A |
5969430 | Forrey | Oct 1999 | A |
6100600 | Pflanz | Aug 2000 | A |
Number | Date | Country |
---|---|---|
742242 | May 1943 | DE |
2138500 | Aug 1971 | DE |
41 01 591 | Jan 1991 | DE |
42 36 092 | Oct 1992 | DE |
195 13 321 | Apr 1995 | DE |
WO 9800639 | Jan 1998 | WO |
Entry |
---|
Jamieson, Multi Rotor Systems, ETSU Report W/23/00355/REP, pp. 21 to 39 plus figures, 1995. |