-
-
-
-
Adjustable propeller
-
Patent number 4,973,225
-
Issue date Nov 27, 1990
-
Claus Kruppa
-
B64 - AIRCRAFT AVIATION COSMONAUTICS
-
-
-
-
3746466
-
Patent number 3,746,466
-
Issue date Jul 17, 1973
-
B63 - SHIPS OR OTHER WATERBORNE VESSELS RELATED EQUIPMENT
-
3338313
-
Patent number 3,338,313
-
Issue date Aug 29, 1967
-
B63 - SHIPS OR OTHER WATERBORNE VESSELS RELATED EQUIPMENT
-
3216507
-
Patent number 3,216,507
-
Issue date Nov 9, 1965
-
B63 - SHIPS OR OTHER WATERBORNE VESSELS RELATED EQUIPMENT
-
3171494
-
Patent number 3,171,494
-
Issue date Mar 2, 1965
-
B64 - AIRCRAFT AVIATION COSMONAUTICS
-
3095044
-
Patent number 3,095,044
-
Issue date Jun 25, 1963
-
B63 - SHIPS OR OTHER WATERBORNE VESSELS RELATED EQUIPMENT
-
3051249
-
Patent number 3,051,249
-
Issue date Aug 28, 1962
-
B63 - SHIPS OR OTHER WATERBORNE VESSELS RELATED EQUIPMENT
-
2786539
-
Patent number 2,786,539
-
Issue date Mar 26, 1957
-
B63 - SHIPS OR OTHER WATERBORNE VESSELS RELATED EQUIPMENT