Device to indicate the position of the sun at different times

Details Device to indicate the position of the sun at different times Device to indicate the position of the sun at different times

1979-11-07

1982-05-25

Holtje, Nelson C.

Measuring, testing, or signalling instruments

Measuring, regulating or indicating instrument, or casing

Geometric

D1004

Patent

active

D02645629

REFERENCES:
patent: 2552215 (1951-05-01), Rekdahl

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