制品/结构美国已授权

Train rail track structure systems

Ask AI about this

查看原文 ↗

申请人Keith A. Langenbeck

发明人Keith A. Langenbeck

公开号US9644323B2

授权号US9644323B2

申请日2016-03-03

公开日2017-05-09

授权日2017-05-09

摘要

CROSS-REFERENCE TO RELATED APPLICATION This application is a CIP (Continuation in Part) of earlier filed U.S. patent application Ser. No. 14/252,952 titled ‘Train Rail Track Structure Systems’ filed Apr. 15, 2014 by Keith A. Langenbeck and of earlier filed U.S. Provisional Patent Application Ser.

Train rail track structure systems

摘要

相关专利