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US Patent: 140,735
Improvement in plastic compositions for the manufacture of knobs and other molded articles
Patentee: Henry E. Shepard (exact or similar names) - New Haven, CT USPTO Classifications: 106/241, 16/417, 16/433, 16/441 Tool Categories: Assignees: Bradley & Hubbard Mfg. Co. - Meriden, CT Manufacturer: Bradley & Hubbard Mfg. Co. - Meriden, CT Witnesses: A. Chamberlain, Jr. E. A. Wilson	Patent Dates: Applied: Feb. 21, 1873 Granted: Jul. 08, 1873 Patent Pictures: USPTO (New site tip) Google Patents Report data errors or omissions to steward Jeff Joslin
Description: The composition of this "plastic" case material is gum shellac and mica.

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