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SELECT DISTINCT patent.*, YEAR(date) as year FROM patent LEFT JOIN category ON category.patent = patent.patent AND category.type = patent.type WHERE (category.class = '15') ORDER BY category ASC, date, patent, type

Total of 17 patents found where: Class is '15';

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T / S Patent Date Description Patentee Category Assigned To
 Ink
D 13,996 June 19, 1883 Design for an Inkstand
Inkstand
GRAY, Lawrence B.
Ink  
 Insulator
U Specimen known 64,654 May 14, 1867 Improvement in Insulators
CD 732.2, threadless insulator with enlarged chamber for slotted pin (CJ 6-93-12)
FLOYD, George
Insulator  
 Lightning Rod
U 139,841 June 10, 1873 Improvement in Coupling Tubular Lightning Rods
Means of coupling tubular lightning rods
WESTON, James H.
Lightning Rod  
U 145,641 December 16, 1873 Improvement in Couplings for Tubular Lightning Rods
Means of coupling tubular lightning rods
FRITSCH, Joseph W.
Lightning Rod  
 Lightning Rod Coupling
U 50,398 October 10, 1865 Lightning Rod Joints
Lightning rods joined with slip joints
SMITH, N. E.
Lightning Rod Coupling  
U 90,578 May 25, 1869 Improvement in Lightning Rod Couplings
Coupling for lightning rods where the ends can be screwed together (see reissue 8,304)
REYBURN, William S.
HUNTER, Edmund A. W.
Lightning Rod Coupling  
U 113,869 April 18, 1871 Improvement in Lightning Rods
Coupling for tubular lightning rods made of a lap or scarf joint
GAYLORD, Albert A.
Lightning Rod Coupling  
U 170,377 November 23, 1875 Improvement in Lightning Rods
Coupling for hollow lightning rods composed of a hollow indented plug that fits into indentions in the rod ends
JOHNSON, Isaac
Lightning Rod Coupling  
U 173,962 February 22, 1876 Improvement in Couplings for Tubing and Lightning Rods
Coupling made of a short hollow piece placed inside both ends of the rod and crimped down through the rod ends to secure the sections
JOHNSON, Isaac
Lightning Rod Coupling Reyburn, Hunter & Co.
U 266,075 October 17, 1882 Lightning Rod Joint or Coupling
Internal coupling for hollow lightning rods that can be pinned to the rod
BALL, Charles E.
Lightning Rod Coupling  
U 303,488 August 12, 1884 Coupling for Tubular Lightning Rods
Coupling for tubular lightning rods
BRADLEY, Sylvester
Lightning Rod Coupling  
U 305,140 September 16, 1884 Lightning Rod Coupling
Coupling for tubular lightning rods
BRADLEY, Sylvester
Lightning Rod Coupling  
U 400,464 April 2, 1889 Lightning Rod and Coupling
Coupling burr with serrated ends that interlock with the rod sections
LAWSHE, Spencer R.
Lightning Rod Coupling  
U 518,793 April 24, 1894 Lightning Rod and Coupling
Couple with internal threads to screw sections together
SMITH, John W.
Lightning Rod Coupling  
 Manufacturing
U 1,904,608 April 18, 1933 Insulator Finishing Brushing Machine
Machine to grind down interlinking passages in a semi-dry insulator body for metal fittings
BETTINI, David
Manufacturing Locke Insulator Corp.
 Mold
U 2,898,658 August 11, 1959 Manufacture and Apparatus for the Manufacture of Ceramic Ware
Method of removing water through conduits in the mold when plastic clay is pressed in a mold.
HARRY, William R.
Mold McGraw-Edison Co.
 Multipart
U 1,122,326 December 29, 1914 High Potential Insulator
Multipart insulator made of Electrose
STEINBERGER, Louis
Multipart  

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