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US Patent: 507,538
Coffee Roaster
Patentees:
David Grove (exact or similar names) - Berlin, Germany
Bernhard Lilienfeld (exact or similar names) - Berlin, Germany

USPTO Classifications:
266/145, 34/140, 34/79

Tool Categories:
agricultural : coffee roasters

Assignees:
None

Manufacturer:
Not known to have been produced

Witnesses:
Unknown
Patent Dates:
Applied: May 06, 1892
Granted: Oct. 31, 1893

Patent Pictures:
USPTO (New site tip)
Google Patents
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