Patent information:
| Patent: | Utility 1,987,683 |
| Patented: | January 15, 1935 |
| Applied: | July 3, 1931 |
| Title: | Insulator |
| Description: | RFI: coat crown with copper glaze to prevent AM radio interference |
| Category: | RFI |
| Assigned to: | Westinghouse Electric & Mfg. Co. |
Patentee Information:
| HUNT, Marsden H. | Parkersburg, WV |
| BARROW, George M. | Derry, PA |
Class and subclass information:
| Class: | 427 | COATING PROCESSES |
| Subclass: | 123 | ELECTRICAL PRODUCT PRODUCED; Metal coating; |
| Class: | 174 | ELECTRICITY: CONDUCTORS AND INSULATORS |
| Subclass: | 126.4 | CONDUITS, CABLES OR CONDUCTORS; Conductor structure (nonsuperconductive); Metal coated on insulation; |
| 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: | 58 | ELECTRICAL PRODUCT PRODUCED; |
| Class: | 427 | COATING PROCESSES |
| Subclass: | 102 | ELECTRICAL PRODUCT PRODUCED; Resistor for current control (excludes heating element); Nonuniform coating; |
| Class: | 427 | COATING PROCESSES |
| Subclass: | 279 | NONUNIFORM COATING; Vitreous coating; |
| Class: | 427 | COATING PROCESSES |
| Subclass: | 287 | NONUNIFORM COATING; Metal, glass, or ceramic base; |
| Class: | 427 | COATING PROCESSES |
| Subclass: | 343 | WITH POST-TREATMENT OF COATING OR COATING MATERIAL; Chemical agent applied to treat coating; Inorganic coating; |
Known specimens:
| None known |
Drawings:
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