Belleville, Illinois
United States
4
2011-06-16
The entities that hold a legal rights for patent applications filed by inventor Heil Robert:
Robert Heil from Belleville, US has applied for patents for these inventions. The list has both pending applications and granted patents:
HEADPHONES WITH ATTACHED MICROPHONE BOOM
#2 | 2010-10-07Drum Microphone Mounting Device
#3 | 2010-08-19MICROPHONE HAVING REAR PHASE REJECTION COLLECTION TUBE
#4 | 2010-05-13Low handling noise vocal microphone
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