4. Stock material or miscellaneous articles
  5. All metal or with adjacent metals
  6. Embodying fibers interengaged or between layers

Dugald Stewart

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Filtering screen and support frame therefor

Liquid purification or separation – Filter – Supported – shaped or superimposed formed mediums
Reexamination Certificate

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Filtering screen and support frame therefor

Adhesive bonding and miscellaneous chemical manufacture – Methods – Surface bonding and/or assembly therefor
Reexamination Certificate

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Method of constructing a filter screen

Adhesive bonding and miscellaneous chemical manufacture – Methods – Surface bonding and/or assembly therefor
Reexamination Certificate

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Method of making a filtering screen and support frame therefor

Plastic and nonmetallic article shaping or treating: processes – Mechanical shaping or molding to form or reform shaped article – To produce composite – plural part or multilayered article
Reexamination Certificate

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Reinforcement for a moulded filtering screen support frame

Stock material or miscellaneous articles – All metal or with adjacent metals – Embodying fibers interengaged or between layers
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Profile ID: LFUS-PAI-P-2692176

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