Navigation plotter

Details Navigation plotter Navigation plotter

1977-01-21

1979-01-09

Holtje, Nelson C.

Measuring, testing, or signalling instruments

Measuring, regulating or indicating instrument, or casing

Geometric

D1004

Patent

active

D02507544

REFERENCES:
patent: 2521087 (1950-09-01), Paulus
patent: 2832138 (1958-04-01), Sullenberger

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