Sundial facepiece

Details Sundial facepiece Sundial facepiece

1982-01-27

1984-10-30

Zarfas, Louis S.

Measuring, testing, or signalling instruments

Time-measuring instrument or casing

Sundial

Patent

active

D02761416

REFERENCES:
patent: D3185 (1868-08-01), Wright
patent: D150072 (1948-06-01), Klaine
patent: D246159 (1977-10-01), Podall
Encyclopedia Americana, vol. 25, .COPYRGT.1978, p. 751-Photo of Stonehenge at top.

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