Electric railway with third rail insulated with glass insulators.
Insulator formed with recesses for pipe pin and metal insert crown
nail-knob with side projection on each part to secure the wire.
nail-knob with nail split in the center
Ash tray
| SELECT DISTINCT patent.*, YEAR(date) as year FROM patent LEFT JOIN name ON name.patent = patent.patent AND name.type = patent.type WHERE (residence = 'Denver, CO') ORDER BY date ASC, patent, type |
Total of 5 patents found where: Residence is 'Denver, CO';
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| T / S | Patent | Date | Description | Patentee | Category | Assigned To |
| 1890 | ||||||
| U | 433,409 | July 29, 1890 | Electric Railway Electric railway with third rail insulated with glass insulators. |
KEITHLEY, Herbert R. |
Third Rail | |
| 1906 | ||||||
| U | 838,482 | December 11, 1906 | Insulator for Line Conductors Insulator formed with recesses for pipe pin and metal insert crown |
WEED, James Murray |
Insulator | |
| 1908 | ||||||
| U |
907,251 | December 22, 1908 | Electrical Wiring Knob nail-knob with side projection on each part to secure the wire. |
LAWRENCE, Harry W. |
Knob | |
| 1920 | ||||||
| U | 1,326,962 | January 6, 1920 | Sectional Non-Rotative Insulating Knob for Supporting Electric Wires nail-knob with nail split in the center |
POINDEXTER, Alfred M. |
Knob | |
| 1944 | ||||||
| U | 2,352,756 | July 4, 1944 | Ash Tray Ash tray |
ANHOLT, Harry M. |
"HU, OU" | |
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