|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 = '174') AND (category.subclass = '201') ORDER BY date ASC, patent, type|
Total of 20 patents found where: Class is '174'; Subclass is '201';
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||149,762||April 14, 1874||Improvement in Telegraph Insulators
Cylindrical grooved insulator held horizontally by pin
|LE BARON, Charles L.
|U||353,120||November 23, 1886||Insulator
CD 187, U-81 & U-82, duplex insulator for underside of crossarm
|BROWN, Robert G.
||Insulator||E. S. Greeley & Co.|
|U||443,174||December 23, 1890||Insulator
Wooden insulator used in a trolley wire hanger
|EMMET, William Le Roy
|U||566,045||August 18, 1896||Insulator for Electrical Purposes
Protective shield of metal with non-conducting enameled coating
|WHITAKER, Alfred J. P.
TREHARNE, Frederick G.
|U||667,882||February 12, 1901||Feeder Wire Insulator
Mine insulator (similar to Sackett see 903,692) [CD 1025?]
|KING, Charles K.
|U||696,665||April 1, 1902||Wire Insulator
|BENBOW, William C.
||Mine||The Benbow Co.|
|U||746,469||December 8, 1903||Electrical Wire Support
Wire support of cylindrical shape & metal support bolt to underhang wire
|U||887,996||May 19, 1908||Combined Insulator and Lamp Hanger
Hanger for lamp
|BURGE, James M.
|U||903,692||November 10, 1908||Feeder Wire Insulator
Mine insulator (Sackett type, similar to 667,882)
|FINCKEL, George M.
||Mine||The Sackett Mine Supply Co.|
|U||904,069||November 17, 1908||Insulator
Strain insulator to electrically disconnect the circuit. (see reissue 13,526)
|KEMPTON, Williard H.
||Strain||The Johns-Pratt Co.|
|U||971,322||September 27, 1910||Mine Insulator
Mine hanger insulator (see GB191027804)
|SPEAKMAN, Charles W.
|U||1,291,217||January 14, 1919||Adjustable Suspension Insulator
Suspension disk with adjustable length pin to equalize the potential across each disk to reduce arc-over
|SONNEBORN, Sol S.
|U||1,302,796||May 6, 1919||Insulator
|HEARD, Thomas J.
|U||1,311,977||August 5, 1919||Insulator Bracket
Bracket with lag screw fixed with nails for small spool insulator
|KYLE, William D.
|U||1,329,656||February 3, 1920||Insulator
Nail knob made by Triangle M (Illinois Electric Porcelain Co.) with captivated nail. (DIXIE NAILIT)
|FARGO, Arthur H.
|U||1,494,023||May 13, 1924||Insulator Bracket
Bracket made of stamped metal to fit upright in hole in crossarm or over top of crossarm to hang down and spool insulator mounted underneath
|ROLFE, Charles A.
|U||1,608,029||November 23, 1926||Insulator
|LOCKE, Fred M.
|U||1,712,860||May 14, 1929||Transposition Pin
Pin (metal) through crossarm for transposition
|U||1,927,639||September 19, 1933||Electric Insulator
Suspension insulator with hole in top to insert pin, plug to cement in the hole, and cap cemented over the top
|U||2,623,094||December 23, 1952||Resiliently Mounted Spool Type Insulator
Rubber bushing for mounting Case type & rack type spool insulators
|MARKLEY, William F.
||Rubber||Western Union Telegraph Co.|
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