David L. Oblad

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San Bernardino, CA, US

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Patents Applicationslast 30 patents

Information Patent Application
INTERACTIVE INTERCOM SYSTEM FOR BUILDING ENTRY CONTROL
- Publication number 20110150195
- Publication date Jun 23, 2011
- David L. Oblad
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Application
TELEPHONE INTERCOM REMOTE LINE INTERFACE MODULES FOR INSTALLATIONS...
- Publication number 20070291916
- Publication date Dec 20, 2007
- David L. Oblad
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Application
SYSTEM FOR THE APPLICATION AND REMOVAL OF INTERCOM TELEPHONE POWER...
- Publication number 20070041544
- Publication date Feb 22, 2007
- David L. Oblad
- H04 - ELECTRIC COMMUNICATION TECHNIQUE