|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 = '191') AND (category.subclass = '42') ORDER BY date ASC, patent, type|
Total of 8 patents found where: Class is '191'; Subclass is '42';
View a patent by clicking on the patent number. You can sort by any of the columns by clicking on the column name.
|T / S||Patent||Date||Description||Patentee||Category||Assigned To|
|U||448,703||March 24, 1891||Support for Electric Line Wires
Hanger insulator for trolley conductor
|WIRT, Herbert C.
|U||452,523||May 19, 1891||Electric Insulator
Cone of wood with metal shield for trolley wire hanger
||Wood||1/2 to James Brusie|
|U||463,824||November 24, 1891||Trolley Wire Hanger
Trolley wire hanger with insulator with threads on inside and outside to screw into bell
|BIRDSALL, Edward T.
SERRELL, Lemuel William
|U||503,039||August 8, 1893||Conductor Support and Insulator
miscellaneous wire support for underground trolley wire & insulator with hole in crown
|ESSICK, William B.
|U||579,725||March 30, 1897||Insulator and Holder for Electric Railways
Trolley hanger insulator suspended from a cable. It is composed of an inverted insulator cup and a metal cover.
|KEITHLY, Willie C.
|U||880,203||February 25, 1908||Insulator
Suspension insulator with petticoat
|DUNCAN, John D. E.
|U||899,859||September 29, 1908||Aerial Trolley Support
Metal pole arm to support trolley hanger insulators
BALSINGER, Edgar McCormack
|U||1,139,142||May 11, 1915||Locking Clip
Locking clip for an Electrose hanger insulator
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