Patent information:
| Patent: | Utility 600,475 |
| Patented: | March 8, 1898 |
| Applied: | October 23, 1897 |
| Title: | Electrical Insulator and Method of Making Same |
| Description: | Multiple thin porcelain shells fused together with glaze, ""glaze-filling"" method, U-928 & U-928A. (see patent 601,195) (see patent gb1898-0006235) Patent was owned by the R. Thomas & Sons Co. |
| Category: | Insulator |
| Assigned to: |
Patentee Information:
| BOCH, John W. | East Liverpool, OH |
Class and subclass information:
| Class: | 174 | ELECTRICITY: CONDUCTORS AND INSULATORS |
| Subclass: | 174 | INSULATORS; With conductor holding means; Insulator structure; |
| Class: | 174 | ELECTRICITY: CONDUCTORS AND INSULATORS |
| Subclass: | 210 | INSULATORS; Sectional, multi-part, composite, or coated; Pin socket type; |
| Class: | 264 | PLASTIC AND NONMETALLIC ARTICLE SHAPING OR TREATING: PROCESSES |
| Subclass: | DIG54 | Processes in making insulators; |
Known specimens:
| Number: | U 928 |
| Number: | U 928A |
Drawings:
Page 1 |