Depth sounder

Details Depth sounder Depth sounder

1988-01-19

1991-02-05

Holtje, Nelson C.

Measuring, testing, or signalling instruments

Measuring, regulating or indicating instrument, or casing

Food preparation type

D10 70

Patent

active

D03143465

REFERENCES:
patent: D191581 (1961-10-01), Scharfenberg
patent: D279766 (1985-07-01), Honda
patent: D281148 (1985-10-01), Highstreet
patent: D289265 (1987-04-01), Wood
patent: D296767 (1988-07-01), Wood
patent: D301841 (1989-06-01), Imazeki
patent: 4644512 (1987-02-01), Grilk
patent: 4829493 (1989-05-01), Bailey
Popular Science, 2/1979, p. 94.
Boat/U.S. Catalog, 1/1984, p. 167, Model 1022.
Boat/U.S. Catalog, 1/1984, p. 169, top right.
Boat/U.S. Catalog, 1/1984, p. 170, top left.

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