|SELECT DISTINCT patent.*, YEAR(date) as year FROM patent WHERE (category = 'Spiral') ORDER BY date ASC, patent, type|
Total of 3 patents found where: Category is 'Spiral';
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|T / S||Patent||Date||Description||Patentee||Category||Assigned To|
|U||1,065,737||June 24, 1913||Insulator and Support
Spiral conical insulator for tightening of line wire
|SLONECKER, Abiram J.
|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.
|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
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