SELECT DISTINCT patent.*, YEAR(date) as year FROM patent LEFT JOIN name ON name.patent = patent.patent AND name.type = patent.type WHERE (category = 'Plunger') ORDER BY last_name DESC, first_name, date, patent, type |
Total of 7 patents found where: Category is 'Plunger';
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T / S | Patent | Date | Description | Patentee | Category | Assigned To |
WATERS, James | ||||||
U | 735,429 | August 4, 1903 | Insulator Machine Plunger for press |
WATERS, James |
Plunger | |
OAKMAN, Samuel | ||||||
U | 132,214 | October 15, 1872 | Improvement in Formers for Segmentally Screw Threaded Insulators Plunger to form segmented threads |
OAKMAN, Samuel |
Plunger | |
U | 132,215 | October 15, 1872 | Improvement in Formers for Segmentally Screw Threaded Insulators Plunger to form segmented threads |
OAKMAN, Samuel |
Plunger | |
LOCKE, Louis Peer | ||||||
U | 1,198,732 | September 19, 1916 | Plunger for Forming Insulators Plunger with holes to release pressure (see 838,727 and reissue 12,934) |
LOCKE, Louis Peer |
Plunger | Locke Insulator Mfg. Co. |
JOHNSON, Chauncey C. | ||||||
U | 913,212 | February 23, 1909 | Insulator Mold Plunger for press formed segmented threads in pinhole |
JOHNSON, Chauncey C. |
Plunger | 9/20 to John Watson |
GILL, James G. | ||||||
U | 215,516 | May 20, 1879 | Improvement in Devices for Attaching Plungers to Glass Presses Means of attaching a plunger to a glass press using a chuck. (This is known as the ""Gill Chuck"" and may have been used in insulator production, it is not known if Gill was employed by Hemingray at the time of this patent.) |
GILL, James G. |
Plunger | |
BENNETT, Cornelius Van Dyke | ||||||
U | 1,157,612 | October 19, 1915 | Die for Insulators Plunger to form suspension petticoats and threaded pinhole |
BENNETT, Cornelius Van Dyke |
Plunger | Locke Insulator Mfg. Co. |
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