Patent information:
Patent: | Utility 1,413,023 |
Patented: | April 18, 1922 |
Applied: | May 26, 1920 |
Title: | Method and Means for Forming Passages in Plastic Material |
Description: | Suspension Hewlett design, method of cutting ring hole |
Category: | Suspension |
Assigned to: | Locke Insulator Corp. |
Patentee Information:
Class and subclass information:
Class: | 264 | PLASTIC AND NONMETALLIC ARTICLE SHAPING OR TREATING: PROCESSES |
Subclass: | 155 | WITH SEVERING, REMOVING MATERIAL FROM PREFORM MECHANICALLY, OR MECHANICALLY SUBDIVIDING WORKPIECE; Making hole or aperture in article; By punching or drilling; |
Class: | 29 | METAL WORKING |
Subclass: | 557 | METHOD OF MECHANICAL MANUFACTURE; Shaping one-piece blank by removing material; |
Class: | 425 | PLASTIC ARTICLE OR EARTHENWARE SHAPING OR TREATING: APPARATUS |
Subclass: | 308 | PREFORM SEVERING MEANS; Means forming from bulk and downstream severing means; |
Known specimens:
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Drawings:
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