4. Electrical audio signal processing systems and devices
  5. Electro-acoustic audio transducer
  6. Microphone capsule only

Matthias Heschel

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Assembly with self-alignment features to position a cover on...

Radiant energy – Photocells; circuits and apparatus – Photocell controlled circuit
Reexamination Certificate

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Double-sided etching technique for providing a semiconductor...

Semiconductor device manufacturing: process – Making device or circuit emissive of nonelectrical signal
Reexamination Certificate

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Double-sided etching technique for semiconductor structure...

Semiconductor device manufacturing: process – Chemical etching – Combined with coating step
Reexamination Certificate

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Fabrication process for package with light emitting device...

Semiconductor device manufacturing: process – Making device or circuit emissive of nonelectrical signal – Including integrally formed optical element
Reexamination Certificate

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Hermetically sealed package for optical, electronic,...

Active solid-state devices (e.g. – transistors – solid-state diode – Housing or package – Insulating material
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Profile ID: LFUS-PAI-P-780163

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