Robert Heil

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Belleville, IL, US

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Patents Grantslast 30 patents

Information Patent Grant
Low handling noise vocal microphone
- Patent number 8,189,842
- Issue date May 29, 2012
- HEIL SOUND, LTD.
- Robert Heil
- H04 - ELECTRIC COMMUNICATION TECHNIQUE

Patents Applicationslast 30 patents

Information Patent Application
HEADPHONES WITH ATTACHED MICROPHONE BOOM
- Publication number 20110143820
- Publication date Jun 16, 2011
- Robert Heil
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Application
Drum Microphone Mounting Device
- Publication number 20100254559
- Publication date Oct 7, 2010
- Robert Heil
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Application
MICROPHONE HAVING REAR PHASE REJECTION COLLECTION TUBE
- Publication number 20100208929
- Publication date Aug 19, 2010
- Robert Heil
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Application
Low handling noise vocal microphone
- Publication number 20100119098
- Publication date May 13, 2010
- Robert Heil
- H04 - ELECTRIC COMMUNICATION TECHNIQUE