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CPC
B61G11/02
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Parent Industries
B
PERFORMING OPERATIONS TRANSPORTING
B61
Railways
B61G
COUPLINGS DRAUGHT AND BUFFING APPLIANCES
B61G11/00
Buffers
Current Industry
B61G11/02
with metal springs
Industries
Overview
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Information
Impact
Patents Grants
last 30 patents
Information
Patent Grant
Railcar end unit
Patent number
11,697,441
Issue date
Jul 11, 2023
O-Ring Sales & Service, Inc.
Kevin G. Johnson
B61 - RAILWAYS
Information
Patent Grant
Railcar end unit
Patent number
10,737,706
Issue date
Aug 11, 2020
O-Ring Sales & Service, Inc.
Kevin G. Johnson
B61 - RAILWAYS
Information
Patent Grant
Railcar end unit
Patent number
9,868,453
Issue date
Jan 16, 2018
O-Ring Sales & Service, Inc.
Kevin G. Johnson
B61 - RAILWAYS
Information
Patent Grant
1935364
Patent number
1,935,364
Issue date
Nov 14, 1933
B61 - RAILWAYS
Information
Patent Grant
1735424
Patent number
1,735,424
Issue date
Nov 12, 1929
B61 - RAILWAYS
Patents Applications
last 30 patents
Information
Patent Application
RAILCAR END UNIT
Publication number
20200339164
Publication date
Oct 29, 2020
O-Ring Sales & Service, Inc.
Kevin G. Johnson
B61 - RAILWAYS
Information
Patent Application
RAILCAR END UNIT
Publication number
20180118235
Publication date
May 3, 2018
O-Ring Sales & Service, Inc.
Kevin G. Johnson
B61 - RAILWAYS
Information
Patent Application
RAILCAR END UNIT
Publication number
20170334469
Publication date
Nov 23, 2017
O-Ring Sales & Service, Inc.
Kevin G. Johnson
B61 - RAILWAYS