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Tom Dutton
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Chesterland, OH, US
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Patents Grants
last 30 patents
Information
Patent Grant
Impact resistant electronic data module housing
Patent number
RE44217
Issue date
May 14, 2013
TimeKeeping Systems, Inc.
Thomas F. Dutton
361 - Electricity: electrical systems and devices
Information
Patent Grant
Guard tour system
Patent number
7,363,196
Issue date
Apr 22, 2008
TimeKeeping Systems, Inc.
Barry Markwitz
G06 - COMPUTING CALCULATING COUNTING
Information
Patent Grant
Impact resistant electronic data module housing
Patent number
6,850,418
Issue date
Feb 1, 2005
TimeKeeping Systems, Inc.
Thomas F. Dutton
H05 - ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
Information
Patent Grant
Guard tour system
Patent number
6,834,259
Issue date
Dec 21, 2004
TimeKeeping Systems, Inc.
Barry Markwitz
G06 - COMPUTING CALCULATING COUNTING
Patents Applications
last 30 patents
Information
Patent Application
Guard tour system
Publication number
20070219753
Publication date
Sep 20, 2007
TimeKeeping Systems, Inc.
Barry Markwitz
G06 - COMPUTING CALCULATING COUNTING
Information
Patent Application
Guard tour system
Publication number
20050080636
Publication date
Apr 14, 2005
Timekeeping Systems, Inc.
Barry Markwitz
G06 - COMPUTING CALCULATING COUNTING
Information
Patent Application
IMPACT RESISTANT ELECTRONIC DATA MODULE HOUSING
Publication number
20040057217
Publication date
Mar 25, 2004
TimeKeeping Systems Incorporated
Thomas F. Dutton
H05 - ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR