Invention Grant
- Patent Title: Method for preparing pipe ends
- Patent Title (中): 管端制备方法
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Application No.: US67042233Application Date: 1933-05-11
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Publication No.: US1952620APublication Date: 1934-03-27
- Inventor: BIRMINGHAM THOMAS F
- Applicant: SUPERHEATER CO LTD
- Assignee: Superheater Co Ltd
- Current Assignee: Superheater Co Ltd
- Priority: US67042233 1933-05-11
- Main IPC: B21C37/28
- IPC: B21C37/28
Information query
