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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 = 'KERSCHNER') AND (first_name = 'Richard M.') ORDER BY date ASC, patent, type

Total of 3 patents found where: Last Name is 'KERSCHNER'; First Name is 'Richard M.';

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T / S Patent Date Description Patentee Category Assigned To
 1930
U 1,743,552 January 14, 1930 Pin Type Insulator
Pin with sharp pointed threads that engage the insulator only at the tips of the threads and insulator with shallow depressions in the pinhole rather than threads		 KERSCHNER, Richard M.
 Pin Hubbard & Co.
 1931
U 1,794,520 March 3, 1931 Insulator Rack
Bracket for rack spool wireholder (see 1,822,037)		 KERSCHNER, Richard M.
 Bracket Hubbard & Co.
U 1,822,037 September 8, 1931 Method of Making Insulator Racks
Method of making rack spool brackets (see 1,794,520)		 KERSCHNER, Richard M.
 Manufacturing Hubbard & Co.

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