4. Drying and gas or vapor contact with solids
  5. Apparatus
  6. With means to treat gas or vapor

Preservation Technologies, L.P.

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Method and apparatus for the deacidification of library material

Drying and gas or vapor contact with solids – Apparatus – With means to treat gas or vapor
Patent

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Method and apparatus for the deacidification of library material

Chemical apparatus and process disinfecting – deodorizing – preser – Process disinfecting – preserving – deodorizing – or sterilizing – Process of storage or protection
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Method and apparatus for the deacidification of library...

Chemical apparatus and process disinfecting – deodorizing – preser – Physical type apparatus – Apparatus for treating solid article or material with fluid...
Reexamination Certificate

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Method for revealing hidden watermarks

Coating processes – Fraud or tamper detecting
Patent

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Profile ID: LFUS-PAI-P-910961

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