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

Total of 3 patents found where: Category is 'Spool';

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T / S Patent Date Description Patentee Category Assigned To
 1884
U 298,594 May 13, 1884 Terminal Insulator
Spool (skirted) with bracket to act as terminal wire support		 LEWIS, Joseph Slater
 Spool 1/2 to William P. Thompson
 1889
U 400,552 April 2, 1889 Telegraph Wire Carrier
Two spools mounted together to secure telegraph wire between them and mounted on a crossarm		 DONALDSON, Robert S.
 Spool  
 1942
U Specimen known 2,286,488 June 16, 1942 Spool Insulator
Spool insulator with deep side groove		 JOHNSON, Lewis E.
 Spool Porcelain Products, Inc.

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