| SELECT DISTINCT patent.*, YEAR(date) as year FROM patent LEFT JOIN name ON name.patent = patent.patent AND name.type = patent.type WHERE (residence = 'Norristown, PA') ORDER BY date ASC, patent, type |
Total of 3 patents found where: Residence is 'Norristown, PA';
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 |
| 1891 | ||||||
| U | 450,384 | April 14, 1891 | Electric Wire Insulator Knob with two grooves and side petticoat |
BERTOLETTE, Daniel A. |
Knob | |
| 1928 | ||||||
| U | 1,677,498 | July 17, 1928 | Apparatus for Undercutting Pinholes in the Center Shells of Insulators Machine to undercut the pinhole for the suspension pin to prevent the pin from pulling out of the insulator. |
SMITH, William Henry |
Suspension | Electric Service Supplies Co. |
| 1930 | ||||||
| U | 1,755,308 | April 22, 1930 | Apparatus for Finishing Insulator Shells Machine to form grooves inside the suspension disk to aid cement adhesion. |
SMITH, William Henry |
Suspension | Electric Service Supplies Co. |
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