Invention Grant
- Patent Title: Expansible rail joint
- Patent Title (中): 可扩展轨道接头
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Application No.: US6810436Application Date: 1936-03-10
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Publication No.: US2147342APublication Date: 1939-02-14
- Inventor: HILL ALBERT E
- Applicant: HILL ALBERT E
- Assignee: Albert E Hill
- Current Assignee: Albert E Hill
- Priority: US6810436 1936-03-10
- Main IPC: E01B11/06
- IPC: E01B11/06
Information query
