Patent information:
| Patent: | Utility 2,154,387 |
| Patented: | April 11, 1939 |
| Applied: | May 24, 1938 |
| Title: | Electric Insulator |
| Description: | RFI: coat crown with metallic glaze to prevent radio interference (advertised in Electrical World 8-12-1939) |
| Category: | RFI |
| Assigned to: | The R. Thomas & Sons Co. |
Patentee Information:
| SLEEMAN, Harold P. | Lisbon, OH |
Class and subclass information:
| Class: | 174 | ELECTRICITY: CONDUCTORS AND INSULATORS |
| Subclass: | 140C | INSULATORS; Combined; With conductive arcing or stress distributing means; Coated; |
| Class: | 174 | ELECTRICITY: CONDUCTORS AND INSULATORS |
| Subclass: | 209 | INSULATORS; Sectional, multi-part, composite, or coated; |
| Class: | 427 | COATING PROCESSES |
| Subclass: | 126.2 | ELECTRICAL PRODUCT PRODUCED; Metallic compound coating; Glass or ceramic base or coating; |
Known specimens:
| None known |
Drawings:
Page 1 |