Edwin L. Johnson

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Ballwin, MO, US

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Patents Grantslast 30 patents

Information Patent Grant
Method and system for attenuating transmission of high amplitude os...
- Patent number 10,502,237
- Issue date Dec 10, 2019
- EDCO USA
- Edwin L. Johnson
- A61 - MEDICAL OR VETERINARY SCIENCE HYGIENE
Information Patent Grant
Retarder control valve assembly and system for rail cars
- Patent number 9,964,230
- Issue date May 8, 2018
- EDCO USA
- Edwin L. Johnson
- F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...
Information Patent Grant
Retarder control valve assembly and system for rail cars
- Patent number 9,732,876
- Issue date Aug 15, 2017
- EDCO USA
- Edwin L. Johnson
- F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...
Information Patent Grant
Flow sensor device and associated vacuum holding system
- Patent number 5,960,821
- Issue date Oct 5, 1999
- Edwin Lee Johnson
- B25 - HAND TOOLS PORTABLE POWER-DRIVEN TOOLS MANIPULATORS

Patents Applicationslast 30 patents

Information Patent Application
RETARDER CONTROL VALVE ASSEMBLY AND SYSTEM FOR RAIL CARS
- Publication number 20170363222
- Publication date Dec 21, 2017
- EDCO USA
- Edwin L. Johnson
- Y10 - TECHNICAL SUBJECTS COVERED BY FORMER USPC
Information Patent Application
RETARDER CONTROL VALVE ASSEMBLY AND SYSTEM FOR RAIL CARS
- Publication number 20150122349
- Publication date May 7, 2015
- EDCO USA
- Edwin L. Johnson
- B61 - RAILWAYS
Information Patent Application
METHOD AND SYSTEM FOR ATTENTUATING TRANSMISSION OF HIGH AMPLITUDE O...
- Publication number 20130108482
- Publication date May 2, 2013
- EDCO USA
- Edwin L. Johnson
- F04 - POSITIVE DISPLACEMENT MACHINES FOR LIQUIDS PUMPS FOR LIQUIDS OR ELASTIC...