4. Plastic and nonmetallic article shaping or treating: processes
  5. Pore forming in situ
  6. By mechanically introducing gas into material

Kari Kirjavainen

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Acoustic elements and method for sound processing

Electrical audio signal processing systems and devices – Electro-acoustic audio transducer – Having electrostatic element
Reexamination Certificate

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Aircraft rotor and aircraft

Aeronautics and astronautics – Aircraft – heavier-than-air – Helicopter or auto-rotating wing sustained – i.e. – gyroplanes
Reexamination Certificate

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Apparatus for extrusion of polymers and plastic products...

Stock material or miscellaneous articles – Composite
Reexamination Certificate

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Dielectric cellular electret film and procedure for its...

Stock material or miscellaneous articles – Web or sheet containing structurally defined element or... – Composite having voids in a component
Reexamination Certificate

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Electroacoustic transducer

Communications – electrical: acoustic wave systems and devices – Transmitter systems
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Profile ID: LFUS-PAI-P-171139

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