| SELECT DISTINCT patent.*, YEAR(date) as year FROM patent LEFT JOIN name ON name.patent = patent.patent AND name.type = patent.type WHERE (last_name = 'KRETZER') AND (first_name = 'Sidney D.') ORDER BY date ASC, patent, type |
Total of 4 patents found where: Last Name is 'KRETZER'; First Name is 'Sidney D.';
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 |
| 1912 | ||||||
| D | 42,173 | February 13, 1912 | Design for Lightning Rod Terminal Lightning rod stand with twists and curls supporting glass ball, weather vane arron, and point |
KRETZER, Sidney D. |
Lightning Rod | St. Louis Lightning Rod Co. |
| 1914 | ||||||
| U | 1,098,738 | June 2, 1914 | Lightning Rod Lightning rod system with multiple points along the crest and eaves and conductor with multiple ground connections |
KRETZER, Sidney D. |
Lightning Rod | |
| 1919 | ||||||
| U | 1,313,391 | August 19, 1919 | Lightning Rod Coupling Lightning rod coupling for spiralled ""star"" shaped lightning rods to allow the ends to be screwed together |
KRETZER, Sidney D. |
Lightning Rod Coupling | |
| 1928 | ||||||
| U | 1,682,288 | August 28, 1928 | Lightning Rod Construction Lightning rod with ornamental support stand and method of attaching to roof peaks or sloped roof |
KRETZER, Sidney D. |
Lightning Rod | |
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