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Daniel Isaak Armstrong
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Blacksburg, VA, US
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Patents Grants
last 30 patents
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Patent Grant
Delayed action door constraint with remote closing by and of a seco...
Patent number
8,196,259
Issue date
Jun 12, 2012
Richard W. Armstrong
E05 - LOCKS KEYS WINDOW OR DOOR FITTINGS SAFES
Patents Applications
last 30 patents
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Patent Application
Delayed Action Door Constraint with Remote Closing By and of a Seco...
Publication number
20090293365
Publication date
Dec 3, 2009
Richard W. Armstrong
E05 - LOCKS KEYS WINDOW OR DOOR FITTINGS SAFES