Wind direction instrument

Details Wind direction instrument Wind direction instrument

1984-03-16

1987-03-24

Holtje, Nelson C.

Measuring, testing, or signalling instruments

Measuring, regulating or indicating instrument, or casing

Geometric

Patent

active

D02889099

REFERENCES:
patent: D249247 (1978-09-01), Shotz
patent: D268298 (1982-07-01), Salisbury
patent: 3160961 (1964-12-01), Linehan
patent: 3881095 (1975-04-01), Taylor
patent: 3935828 (1976-02-01), Pfund
patent: 4182171 (1980-01-01), Looker
patent: 4283705 (1981-08-01), James
patent: 4344065 (1982-08-01), Erwin
patent: 4454757 (1984-06-01), Weinstein
Sailboat & Equipment Directory-1982, pp. 113-125, Electronic Sailboat Instruments.

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