| 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 = '140H') ORDER BY date ASC, patent, type |
Total of 12 patents found where: Class is '174'; Subclass is '140H';
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 |
| 1868 | ||||||
| U | 75,889 | March 24, 1868 | Improvement in Telegraph Insulators Hook with metal case secured to crossarm (see reissue 75,889) |
FINN, J. L. |
Hook | |
| 1880 | ||||||
| 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. |
| 1912 | ||||||
| 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 | |
| 1913 | ||||||
| U | 1,069,782 | August 12, 1913 | Electric Insulator Multipart cable clamp using metal crown cap |
HILLIARD, John D. |
Multipart | |
| 1918 | ||||||
| U | 1,277,304 | August 27, 1918 | Metal Protected High Voltage Insulator Protective shield of metal to protect insulator |
GATI, Bila |
Protective Shield | |
| 1928 | ||||||
| U | 1,659,183 | February 14, 1928 | Insulator Suspension with metal flanges to balance electrical field |
AUSTIN, Arthur O. |
Suspension | The Ohio Brass Co. |
| U | 1,678,663 | July 31, 1928 | Insulator Protective shield |
WILSON, Leon T. |
Protective Shield | American Telephone & Telegraph Co. |
| 1929 | ||||||
| U | 1,702,235 | February 12, 1929 | System of Line Insulation and Insulators Therefor Odd Electrose insulator |
STEINBERGER, Louis |
Insulator | |
| U | 1,730,170 | October 1, 1929 | Insulator Design with metal pin and metal projections to prevent arc-over |
SMITH, Harold B. |
Suspension | Westinghouse Electric & Mfg. Co. |
| 1930 | ||||||
| U | 1,782,790 | November 25, 1930 | Insulator Strain insulator composed of a wooden strain sealed inside porcelain tubular shell that is filled with non-conducting oil |
MILLER, Frederic H. JACKSON, Ray P. |
Strain | Westinghouse Electric & Mfg. Co. |
| 1934 | ||||||
| U | 1,967,654 | July 24, 1934 | Insulator Fog type multipart & suspension insulator with porous coating, wire screen for RFI |
AUSTIN, Arthur O. |
Fog Type | The Ohio Brass Co. |
| 1936 | ||||||
| U | 2,048,016 | July 21, 1936 | Fog Type Insulator Fog-type suspension disk with metal dish underneath to keep bottom pin area dry |
LUSIGNAN, JR., Joseph T. |
Fog Type | The Ohio Brass Co. |
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