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William C. Campbell
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Escondido, CA, US
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Patents Grants
last 30 patents
Information
Patent Grant
Hard hat
Patent number
9,974,350
Issue date
May 22, 2018
Poma 22 LLC
Steve Harvey Perusse
A42 - HEADWEAR
Information
Patent Grant
Hard hat with filtered, battery-operated air flow system and method
Patent number
9,510,632
Issue date
Dec 6, 2016
Poma 22 LLC
Steve Harvey Perusse
A42 - HEADWEAR
Information
Patent Grant
No drip hot swap connector and method of use
Patent number
8,820,351
Issue date
Sep 2, 2014
Chilldyne, Inc.
Steve Harrington
H05 - ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
Patents Applications
last 30 patents
Information
Patent Application
Hard Hat with Filtered, Battery-Operated Air Flow System and Method
Publication number
20170079365
Publication date
Mar 23, 2017
Poma 22 LLC
Steve Harvey Perusse
A42 - HEADWEAR
Information
Patent Application
HARD HAT WITH FILTERED, BATTERY-OPERATED AIR FLOW SYSTEM AND METHOD
Publication number
20150296917
Publication date
Oct 22, 2015
Steve Harvey Perusse
A42 - HEADWEAR
Information
Patent Application
No Drip Hot Swap Connector And Method of Use
Publication number
20140373933
Publication date
Dec 25, 2014
CHILLDYNE, INC.
Steve Harrington
G06 - COMPUTING CALCULATING COUNTING