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Raphael Koroma Chidubem
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Richmond, VA, US
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Patents Grants
last 30 patents
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Patent Grant
Exhaust tail pipe filter
Patent number
D914566
Issue date
Mar 30, 2021
Raphael Koroma Chidubem
D12 - Transportation
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Patent Grant
Exhaust tail pipe/emissions filter
Patent number
10,823,024
Issue date
Nov 3, 2020
Raphael Koroma Chidubem
F01 - MACHINES OR ENGINES IN GENERAL ENGINE PLANTS IN GENERAL STEAM ENGINES
Patents Applications
last 30 patents
Information
Patent Application
EXHAUST TAIL PIPE INSERT/EMISSIONS FILTER
Publication number
20210140355
Publication date
May 13, 2021
Raphael K. Chidubem
F01 - MACHINES OR ENGINES IN GENERAL ENGINE PLANTS IN GENERAL STEAM ENGINES
Information
Patent Application
EXHAUST TAIL PIPE/EMISSIONS FILTER
Publication number
20200248600
Publication date
Aug 6, 2020
Raphael Koroma Chidubem
F01 - MACHINES OR ENGINES IN GENERAL ENGINE PLANTS IN GENERAL STEAM ENGINES
Information
Patent Application
EXHAUST TAIL PIPE/EMISSIONS FILTER
Publication number
20180313242
Publication date
Nov 1, 2018
Raphael Koroma Chidubem
F01 - MACHINES OR ENGINES IN GENERAL ENGINE PLANTS IN GENERAL STEAM ENGINES