Invention Grant
- Patent Title: Process for making return bends
- Patent Title (中): 回弯的过程
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Application No.: US22747338Application Date: 1938-08-30
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Publication No.: US2250879APublication Date: 1941-07-29
- Inventor: WILHELM RIEGER
- Applicant: SUPERHEATER CO LTD
- Assignee: Superheater Co Ltd
- Current Assignee: Superheater Co Ltd
- Priority: DE2250879X 1937-09-30
- Main IPC: B21C37/28
- IPC: B21C37/28
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