Navigation rule

Details Navigation rule Navigation rule

1988-03-21

1991-01-01

Holtje, Nelson C.

Measuring, testing, or signalling instruments

Measuring, regulating or indicating instrument, or casing

Geometric

D10 61, D10 71

Patent

active

D03133583

REFERENCES:
patent: 825934 (1906-07-01), Pierson
patent: 1877341 (1932-09-01), Kurtz, Jr.
patent: 2420348 (1947-03-01), Boriff
patent: 2856691 (1958-10-01), Pattantyus
Yachting, Navigation Plotter, 9/1979, p. 116.

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