Sun dial

Details Sun dial Sun dial

1977-01-12

1978-09-19

Holtje, Nelson C.

Measuring, testing, or signalling instruments

Time-measuring instrument or casing

Sundial

D1003

Patent

active

D02494736

REFERENCES:
patent: D100776 (1936-08-01), Jacobs
patent: 3099881 (1963-08-01), Snider
patent: 3348321 (1967-10-01), Cunningham
patent: 3370415 (1968-02-01), McIlvaine
patent: 3516243 (1970-06-01), Hazard
patent: 3983688 (1976-10-01), Kochinos

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