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Patents.

 Subject
Subject Source: Art & Architecture Thesaurus

Found in 2 Collections and/or Records:

Martin Rich patent

 Collection — Manuscript box 2 - folder 1: [Barcode: 31924065239679]
Identifier: 272

Thomas McCarty patent

 Collection — Manuscript box 77 - folder 1: [Barcode: 31924065254181]
Identifier: 282m