Slide rule for navigation

Details Slide rule for navigation Slide rule for navigation

1998-06-17

2000-04-04

Davis, Antoine Duval

Measuring, testing, or signalling instruments

Measuring, regulating or indicating instrument, or casing

Geometric

1004

Patent

active

D04222261

REFERENCES:
patent: D402906 (1998-12-01), Sullivan
patent: 2418207 (1947-04-01), Tilbrook
patent: 4190960 (1980-03-01), Warner
patent: 4306141 (1981-12-01), Bailey et al.
patent: 4311903 (1982-01-01), Seely
patent: 4996776 (1991-03-01), Poirier

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