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SELECT DISTINCT patent.*, YEAR(date) as year FROM patent LEFT JOIN name ON name.patent = patent.patent AND name.type = patent.type WHERE (last_name = 'RANDOLPH') AND (first_name = 'Leonard M.') ORDER BY date ASC, patent, type

Total of 4 patents found where: Last Name is 'RANDOLPH'; First Name is 'Leonard M.';

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T / S Patent Date Description Patentee Category Assigned To
 1904
U 761,102 May 31, 1904 Insulator
Insulator for carrying heavy cables composed of cap over the top to surround the conductor to prevent sparking and electrical leakage		 RANDOLPH, Leonard M.
 Insulator  
 1908
U 908,136 December 29, 1908 Third Rail Insulator
Third rail insulator (Ohio Brass)		 RANDOLPH, Leonard M.
 Third Rail Essex Co.
 1909
U 922,951 May 25, 1909 Third Rail Insulator
Conical shaped third rail insulator.		 RANDOLPH, Leonard M.
 Third Rail Essex Co.
 1912
U 1,035,231 August 13, 1912 Insulator
Use of varnish residue to secure hold metal suspension parts to a porcelain hood or skirt		 RANDOLPH, Leonard M.
 Miscellaneous  

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