Method of and apparatus for making annular sheets of rubber

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US1503665A Method of and apparatus for making annular sheets of rubber 失效

Title translation: 制造环形橡胶片的方法和设备

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Patent Title: Method of and apparatus for making annular sheets of rubber
Patent Title (中): 制造环形橡胶片的方法和设备
Application No.: US34809619

Application Date: 1919-12-29
Publication No.: US1503665A

Publication Date: 1924-08-05
Inventor: THOMAS ROBERTS FRED
Applicant: THOMAS ROBERTS FRED
Assignee: Roberts Fred Thomas
Current Assignee: Roberts Fred Thomas
Priority: US34809619 1919-12-29

Method of and apparatus for making annular sheets of rubber

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