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SELECT DISTINCT patent.*, YEAR(date) as year FROM patent WHERE (category = 'Metal') ORDER BY date ASC, patent, type

Total of 6 patents found where: Category is 'Metal';

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T / S Patent Date Description Patentee Category Assigned To
 1851
U Specimen known 8,418 October 14, 1851 Improvement in Insulators for Telegraph Wires
Metal or cast iron insulator with cupped dry area at bottom. Glass poured in with a conductor supporting iron rod embedded in the glass, and the cupped is coated or lined with glass, porcelain, or enamel. The bottom skirt is slanted inward 45 degrees to p
BATCHELDER, John M.
Metal  
 1867
U Specimen known 71,564 November 26, 1867 Improvement in Telegraph Insulators
Metal shell lined with glass or porcelain with wooden pin and paraffin cavity
WOOD, Merritt L.
Metal 2/3 to S. Porter & L. M. Monroe
 1884
U 310,059 December 30, 1884 Insulator
Metal plate to hold wire on side of insulator
JAMES, Hamilton L.
Metal  
 1904
U 750,722 January 26, 1904 Insulator
Metal encased insulator with metal cap to hold cable (Brown p. 25)
STEINBERGER, Louis
Metal  
 1907
U 849,731 April 9, 1907 Insulator
Metal crown cap
FEUERSTEIN, Siegmund
Metal  
 1935
U Specimen known 1,988,369 January 15, 1935 Radio Interferenceproof Insulator
Metal cap cemented into recessed formed in top of pin type insulator
BROWN, Harold H.
Metal Locke Insulator Corp.

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