Attitude director indicator

Details Attitude director indicator Attitude director indicator

1982-01-27

1984-05-29

Holtje, Nelson C.

Measuring, testing, or signalling instruments

Measuring, regulating or indicating instrument, or casing

Geometric

Patent

active

D02740451

REFERENCES:
patent: D170183 (1953-08-01), Collins et al.
patent: D179443 (1956-12-01), Dayton et al.
patent: D180812 (1957-08-01), Schweighofer
patent: D190763 (1961-06-01), Varner
patent: D190968 (1961-07-01), Andres
patent: D205791 (1966-09-01), Harding
patent: D256678 (1980-09-01), Schmidt
patent: 2821695 (1958-01-01), Strock
patent: 4326189 (1982-04-01), Crane
patent: 33967236 (1976-06-01), Dietrich

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