Invention Grant
- Patent Title: Step-up rail-joint.
- Patent Title (中): 升压轨道接头。
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Application No.: US1906348853Application Date: 1906-12-21
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Publication No.: US844794APublication Date: 1907-02-19
- Inventor: HALL GEORGE L
- Applicant: NAT RAILWAY MATERIALS COMPANY
- Assignee: Nat Railway Materials Company
- Current Assignee: Nat Railway Materials Company
- Priority: US1906348853 1906-12-21
Information query
