Communications: directive radio wave systems and devices (e.g. – Directive – Beacon or receiver
Patent
1989-09-18
1990-12-04
Blum, Theodore M.
Communications: directive radio wave systems and devices (e.g.,
Directive
Beacon or receiver
367111, 367907, G01S 502
Patent
active
049757091
ABSTRACT:
A wake plotter apparatus capable of displaying the bearings of a vessel and a target point in which the vessel is intended to be returned is disclosed which includes a compass sensor, a speed sensor, a displaying device and a central processing unit.
REFERENCES:
patent: 4114437 (1978-09-01), Krogmann
patent: 4590569 (1986-05-01), Rogoff et al.
patent: 4623966 (1986-11-01), O'Sullivan
patent: 4706090 (1987-11-01), Hashiguchi et al.
patent: 4837750 (1989-06-01), Saunders
Blum Theodore M.
Fuji-Royal Co., Ltd.
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