Patent information:
| Patent: | Utility 907,155 |
| Patented: | December 22, 1908 |
| Applied: | November 24, 1905 |
| Title: | Manufacture of Spar Insulators |
| Description: | Feldspar insulator material (see reissue 12,992 on 7-13-1909) |
| Category: | Feldspar |
| Assigned to: | |
Patentee Information:
Class and subclass information:
| Class: | 264 | PLASTIC AND NONMETALLIC ARTICLE SHAPING OR TREATING: PROCESSES |
| Subclass: | 322 | MECHANICAL SHAPING OR MOLDING TO FORM OR REFORM SHAPED ARTICLE; Shaping against forming surface (e.g., casting, die shaping, etc.); Applying heat or pressure; Reshaping solid work or introducing solid work into mold cavity; Initially softening workpiece; |
| Class: | 264 | PLASTIC AND NONMETALLIC ARTICLE SHAPING OR TREATING: PROCESSES |
| Subclass: | 332 | MECHANICAL SHAPING OR MOLDING TO FORM OR REFORM SHAPED ARTICLE; Shaping against forming surface (e.g., casting, die shaping, etc.); Applying heat or pressure; Fusing or melting inorganic material; |
| Class: | 501 | COMPOSITIONS: CERAMIC |
| Subclass: | 154 | CERAMIC COMPOSITIONS; Silicon compound containing; |
Known specimens:
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