Navigational board instrument for use in sky diving

Details Navigational board instrument for use in sky diving Navigational board instrument for use in sky diving

1990-08-20

1993-03-02

Douglas, Alan P.

Measuring, testing, or signalling instruments

Measuring, regulating or indicating instrument, or casing

Geometric

D10 68

Patent

active

D03336255

REFERENCES:
patent: D150298 (1948-07-01), Johanson et al.
patent: D303357 (1989-09-01), Yusa
patent: D305739 (1990-01-01), Raitmaa
patent: D308488 (1990-06-01), Iden
patent: 4438568 (1984-03-01), Kramer et al.

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