Equatorial region of a sundial

Details Equatorial region of a sundial Equatorial region of a sundial

1990-05-14

1993-06-08

Holtje, Nelson C.

Measuring, testing, or signalling instruments

Dial, indicator hand, or other element or attachment

Watch or clock element, or attachment

D10 45

Patent

active

D03362647

REFERENCES:
patent: D162817 (1951-04-01), Goldner
patent: D187289 (1960-02-01), Thew
patent: D209223 (1967-11-01), Vuilleumier
patent: D224747 (1972-09-01), Daher
Sundials & More--catalogue--front cover--Equatorial Sundial.

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