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David Paul Smith
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Wilmington, IL, US
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Patents Grants
last 30 patents
Information
Patent Grant
Operator controlled electrical output signal device with variable f...
Patent number
10,942,540
Issue date
Mar 9, 2021
Prince Industries, Inc.
David Paul Smith
G06 - COMPUTING CALCULATING COUNTING
Information
Patent Grant
Systems and methods for self-contained adjustable spring plunger bu...
Patent number
10,073,487
Issue date
Sep 11, 2018
Prince Industries, Inc.
David Paul Smith
G05 - CONTROLLING REGULATING
Information
Patent Grant
Operator controlled electrical output signal device with variable f...
Patent number
9,836,077
Issue date
Dec 5, 2017
Prince Industries, Inc.
David Paul Smith
G05 - CONTROLLING REGULATING
Information
Patent Grant
Disc check valve system and method
Patent number
9,488,290
Issue date
Nov 8, 2016
Prince Industries, Inc.
David Paul Smith
F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...
Information
Patent Grant
Operator controlled electrical output signal device with variable f...
Patent number
9,323,283
Issue date
Apr 26, 2016
Prince Industries, Inc.
David Paul Smith
G05 - CONTROLLING REGULATING
Patents Applications
last 30 patents
Information
Patent Application
OPERATOR CONTROLLED ELECTRICAL OUTPUT SIGNAL DEVICE WITH VARIABLE F...
Publication number
20180107235
Publication date
Apr 19, 2018
David Paul Smith
Y10 - TECHNICAL SUBJECTS COVERED BY FORMER USPC
Information
Patent Application
OPERATOR CONTROLLED ELECTRICAL OUTPUT SIGNAL DEVICE WITH VARIABLE F...
Publication number
20160202720
Publication date
Jul 14, 2016
Prince Industries, Inc.
David Paul Smith
G06 - COMPUTING CALCULATING COUNTING
Information
Patent Application
DISC CHECK VALVE SYSTEM AND METHOD
Publication number
20160186872
Publication date
Jun 30, 2016
Prince Industries, Inc.
David Paul Smith
F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...
Information
Patent Application
SYSTEMS AND METHODS FOR SELF-CONTAINED ADJUSTABLE SPRING PLUNGER BU...
Publication number
20160179127
Publication date
Jun 23, 2016
Prince Industries, Inc.
David Paul Smith
G05 - CONTROLLING REGULATING
Information
Patent Application
OPERATOR CONTROLLED ELECTRICAL OUTPUT SIGNAL DEVICE WITH VARIABLE F...
Publication number
20140214273
Publication date
Jul 31, 2014
Prince Industries, Inc.
David Paul Smith
G06 - COMPUTING CALCULATING COUNTING
Information
Patent Application
Electro-Hydraulic Pressure Reducing and Relieving Valve with Flow F...
Publication number
20140116551
Publication date
May 1, 2014
David Paul Smith
Y10 - TECHNICAL SUBJECTS COVERED BY FORMER USPC