|SELECT DISTINCT patent.*, YEAR(date) as year FROM patent WHERE (category = 'Spool') ORDER BY specimen ASC, date, patent, type|
Total of 3 patents found where: Category is 'Spool';
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|T / S||Patent||Date||Description||Patentee||Category||Assigned To|
|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|
|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.
|U||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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