Combined compass and thermometer

Details Combined compass and thermometer Combined compass and thermometer

1994-01-11

1995-04-04

Douglas, Alan P.

Measuring, testing, or signalling instruments

Measuring, regulating or indicating instrument, or casing

Geometric

D10 57, D10 68

Patent

active

D03569659

REFERENCES:
patent: D303357 (1989-09-01), Yusa
patent: 2358589 (1944-09-01), Piffath
patent: 4659000 (1987-04-01), Sales et al.
Gutmann Cutlery, Inc.; Compasses; Nov. 1982; p. 69.

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