U.S. Patent Model, Salesman's Sample or
Exhibition Model for
Electric Safety-Grating, c. 1905
Patent No. 763890 by Gustav T.E. Henriksen, Milwaukee,
28 June 1904. Brass plaque engraved: "Henriksen Electric Safety Grating System,
Pat. Jun. 28 1904, Chicago, USA",
height 16 in. (41 cm) x width and depth 16 ¼ in. (41,5 cm).
In original metal transport case. A fascinating exhibition piece!
Estimate: € 4.000/7.000
US$ 5,000/9,000
Reserve: € 3.500 /US$ 4,480
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