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 = '313') AND (category.subclass = '325') ORDER BY category DESC, date, patent, type |
Total of 12 patents found where: Class is '313'; Subclass is '325';
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 |
Suspension | ||||||
U | 880,203 | February 25, 1908 | Insulator Suspension insulator with petticoat |
DUNCAN, John D. E. |
Suspension | |
U | 1,015,224 | January 16, 1912 | Insulator Suspension insulator of insulating rope, hoods, and arcing rods. [This looks very close to the handful of glass suspension insulators found in 2002 in northern CA by Paul Greaves and Mike Spadafora. The glass was most probably made by Hemingray. No markings were found.] |
ALSBERG, Julius |
Suspension | |
U | 1,128,424 | February 16, 1915 | Insulator Suspension multipart insulator fitted with arcing horns |
DUNCAN, John D. E. |
Suspension | |
U | 1,273,015 | July 16, 1918 | Electric Insulator Suspension made of several parts bolted together |
THOMAS, Percy H. |
Suspension | |
U | 1,947,321 | February 13, 1934 | Arcing Horn for Insulators Arcing horns for Hewlett or other suspension insulator string |
VINCENT, Harold Blanchard SLEEMAN, Harold Parker |
Suspension | The R. Thomas & Sons Co. |
Lightning Rod Point | ||||||
U | 883,303 | March 31, 1908 | Security Lightning Arrester Lightning rod with multiple separate points arranged along the conductor on the edges of the roof |
DRAKE, William E. |
Lightning Rod Point | |
Lightning Arrestor | ||||||
U | 280,324 | June 26, 1883 | Combined Insulator and Lightning arrester Combined insulator and lightning arrestor |
NOBLE, John E. |
Lightning Arrestor | 1/6 to Charles J. Leming |
Lightning Arrester/U-70 | ||||||
U | 1,283,651 | November 5, 1918 | Lightning Arrester Lightning arrester with hole through top of insulator similar to U-70. |
BUCHANAN, Sutton R. |
Lightning Arrester/U-70 | |
Hook | ||||||
U | 63,206 | March 26, 1867 | Improvement in Insulators for Telegraph Wires Hook encased in metal or wood allows arcing to ground |
BROOKS, David |
Hook | |
R | 9,484 | November 30, 1880 | Telegraph Insulator Hook with metal case secured to crossarm (see 75,889) |
FINN, John L. |
Hook | Amzi S. Dodd and Chinnock Electric Co. |
Arcing | ||||||
U | 1,001,137 | August 22, 1911 | Insulator Protector Arcing device attached to top and bottom of insulator |
GODDARD, Walter T. |
Arcing | Locke Insulator Mfg. Co. |
Arc Gap | ||||||
U | 2,011,136 | August 13, 1935 | Protective Apparatus Arcing gap using flux control insulators |
AUSTIN, Arthur O. |
Arc Gap | The Ohio Brass Co. |
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