4. Bleaching and dyeing; fluid treatment and chemical modification
  5. Treatment of hides, skins, feathers and animal tissues
  6. Tanning

Hedman & Costigan ,P.C.

Law Firm

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Absorber-reflector for solar heating

Stoves and furnaces – Solar heat collector – Controlling solar radiation
Reexamination Certificate

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Accessory for fitting auxiliary components for a work...

Supports: cabinet structure – For particular electrical device or component – Particular electrical wiring feature
Reexamination Certificate

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Accumulator dehydrator for cooling circuits with a...

Refrigeration – Refrigeration producer – With refrigerant treater
Reexamination Certificate

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Acoustic board with an improved composite structure

Stock material or miscellaneous articles – Sheet including cover or casing – Including elements cooperating to form cells
Reexamination Certificate

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Adapter pad for diving helmet

Equipment for safety – protection – and rescue – Body restraint or protective covering – Element or attachment
Design Patent

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