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SELECT DISTINCT patent.*, YEAR(date) as year FROM patent WHERE (assigned_to = 'Jeffery Dewitt Insulator Co.') ORDER BY date ASC, patent, type

Total of 1 patents found where: Assigned To is 'Jeffery Dewitt Insulator Co.';

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T / S Patent Date Description Patentee Category Assigned To
 1938
U 2,139,415 December 6, 1938 Strain or Suspension Clamp
A combined strain and suspension clamp		 MCLACHLAN, Alexander
 Suspension Jeffery Dewitt Insulator Co.

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