Invention Grant
- Patent Title: Railway-switch mechanism.
- Patent Title (中): 铁路开关机制。
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Application No.: US17901017Application Date: 1917-07-06
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Publication No.: US1243376APublication Date: 1917-10-16
- Inventor: ALLARD ANDREW J
- Applicant: ALLARD ANDREW J
- Assignee: Andrew J Allard
- Current Assignee: Andrew J Allard
- Priority: US17901017 1917-07-06
Public/Granted literature
- US11643275B1 Apparatus for a dispatch and delivery system Public/Granted day:2023-05-09
Information query
