SELECT DISTINCT patent.*, YEAR(date) as year FROM patent LEFT JOIN name ON name.patent = patent.patent AND name.type = patent.type WHERE (category = 'Spiral') ORDER BY last_name ASC, first_name, date, patent, type |
Total of 3 patents found where: Category is 'Spiral';
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T / S | Patent | Date | Description | Patentee | Category | Assigned To |
SLONECKER, Abiram J. | ||||||
U | 1,065,737 | June 24, 1913 | Insulator and Support Spiral conical insulator for tightening of line wire |
SLONECKER, Abiram J. |
Spiral | |
STROUP, Charles L. | ||||||
U | 1,869,397 | August 2, 1932 | Insulator Insulator with spiral or helical grooves to all rain to wash the surface better |
STROUP, Charles L. |
Spiral | |
VON CRON, Hans | ||||||
U | 2,776,332 | January 1, 1957 | Self-Cleaning Outdoor High Tension Insulators Spiral or helical side petticoats that are washed by rain |
VON CRON, Hans |
Spiral | Siemens-Schuckertwerke Aktiengesellschaft |
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