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Zijian Yan
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Oakville, CA
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Patents Grants
last 30 patents
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Patent Grant
Railroad hopper car structure and gate therefor
Patent number
11,697,437
Issue date
Jul 11, 2023
National Steel Car Limited
Elliot Powidajko
B61 - RAILWAYS
Patents Applications
last 30 patents
Information
Patent Application
MULTI-UNIT RAILROAD CAR AND RAILROAD CAR TRUCKS THEREFOR
Publication number
20240101167
Publication date
Mar 28, 2024
NATIONAL STEEL CAR LIMITED
Jamal HEMATIAN
B61 - RAILWAYS
Information
Patent Application
RAILROAD HOPPER CAR WITH FLOW THROUGH STRUCTURE
Publication number
20230399033
Publication date
Dec 14, 2023
National Steel Car Limited
Oliver M. Veit
B61 - RAILWAYS
Information
Patent Application
RAILROAD HOPPER CAR STRUCTURE AND GATE THEREFOR
Publication number
20200339163
Publication date
Oct 29, 2020
National Steel Car Limited
Elliot Powidajko
B61 - RAILWAYS