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(en )
1947-06-10
Object locating system
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1966-08-09
Capacitive resolver
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1966-12-13
Attitude sensing apparatus
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1939-08-29
Navigational system
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1952-01-08
Navigation computer and piloting system
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1962-03-13
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1947-02-25
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2009-08-27
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1980-04-08
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1975-06-24
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1967-09-05
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1974-03-15
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1955-02-08
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1942-09-29
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1989-07-18
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1962-12-11
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1964-04-21
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1975-10-28
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1966-04-12
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1983-12-06
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1949-07-26
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1969-12-02
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1960-08-24
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1967-09-13
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