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

Total of 1 patents found where: Category is 'Mica';

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T / S Patent Date Description Patentee Category Assigned To
 1892
U 483,646 October 4, 1892 Process of Making Artificial Mica Sheets for Electrical Insulation
Molding process to make artificial sheets of mica		 DYER, Arthur H. S.
 Mica Eugene Munsell & Co.

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