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:

LOCKE, Fred M. Victor, NY

Class and subclass information:

Class:264PLASTIC AND NONMETALLIC ARTICLE SHAPING OR TREATING: PROCESSES
Subclass:322MECHANICAL 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:264PLASTIC AND NONMETALLIC ARTICLE SHAPING OR TREATING: PROCESSES
Subclass:332MECHANICAL 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:501COMPOSITIONS: CERAMIC
Subclass:154CERAMIC COMPOSITIONS Silicon compound containing;

Known specimens:

None known