John Willison

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Cranberry, PA, US

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Patents Grantslast 30 patents

Information Patent Grant
Shield for sumping frame of mining machine
- Patent number 9,903,202
- Issue date Feb 27, 2018
- Joy MM Delaware, Inc.
- John Willison
- E21 - EARTH DRILLING MINING
Information Patent Grant
Air flow system for mining machine
- Patent number 9,482,090
- Issue date Nov 1, 2016
- Joy MM Delaware, Inc.
- John Willison
- E21 - EARTH DRILLING MINING
Information Patent Grant
Air flow system for mining machine
- Patent number 9,291,052
- Issue date Mar 22, 2016
- Joy MM Delaware, Inc.
- John Willison
- E21 - EARTH DRILLING MINING
Information Patent Grant
Cutter drum extension mechanism
- Patent number 8,231,179
- Issue date Jul 31, 2012
- Joy MM Delaware, Inc.
- John E. Willison
- E21 - EARTH DRILLING MINING
Information Patent Grant
Continuous miner having a sumping frame
- Patent number 7,703,857
- Issue date Apr 27, 2010
- Joy MM Delaware, Inc.
- John E. Willison
- E21 - EARTH DRILLING MINING

Patents Applicationslast 30 patents

Information Patent Application
SHIELD FOR SUMPING FRAME OF MINING MACHINE
- Publication number 20170089197
- Publication date Mar 30, 2017
- Joy MM Delaware, Inc.
- John Willison
- E21 - EARTH DRILLING MINING
Information Patent Application
AIR FLOW SYSTEM FOR MINING MACHINE
- Publication number 20160160643
- Publication date Jun 9, 2016
- Joy MM Delaware, Inc.
- John Willison
- E21 - EARTH DRILLING MINING
Information Patent Application
AIR FLOW SYSTEM FOR MINING MACHINE
- Publication number 20140232171
- Publication date Aug 21, 2014
- Joy MM Delaware, Inc.
- John Willison
- E21 - EARTH DRILLING MINING
Information Patent Application
CUTTER DRUM EXTENSION MECHANISM
- Publication number 20100276986
- Publication date Nov 4, 2010
- JOY MM DELAWARE
- John E. Willison
- E21 - EARTH DRILLING MINING
Information Patent Application
CONTINUOUS MINER HAVING A SUMPING FRAME
- Publication number 20090066148
- Publication date Mar 12, 2009
- Joy MM Delaware, Inc.
- John E. Willison
- E21 - EARTH DRILLING MINING