4. Plastic and nonmetallic article shaping or treating: processes
  5. Forming continuous or indefinite length work
  6. Shaping by extrusion

Thomas Dale Ketcham

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Die assembly and method for forming honeycomb filters

Plastic and nonmetallic article shaping or treating: processes – Forming continuous or indefinite length work – Shaping by extrusion
Reexamination Certificate

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Electrolyte sheet with a corrugation pattern

Chemistry: electrical current producing apparatus – product – and – Having magnetic field feature
Reexamination Certificate

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Electrolyte sheet with regions of different compositions and...

Chemistry: electrical current producing apparatus – product – and – Fuel cell – subcombination thereof – or method of making or...
Reexamination Certificate

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Flow-through honeycomb substrate and exhaust after treatment...

Chemistry of inorganic compounds – Modifying or removing component of normally gaseous mixture – Mixture is exhaust from internal-combustion engine
Reexamination Certificate

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