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US Patent: 17,355
Electromagnetic Fire Alarm Telegraph for Cites
Patentees:
William F. Channing (exact or similar names) - Boston, Suffolk County, MA
Moses G. Farmer (exact or similar names) - Salem, Essex County, MA

USPTO Classifications:
340/297, 340/298, 340/299

Tool Categories:
electrical devices : telegraphic apparatus

Assignees:
William F. Channing - Boston, Suffolk County, MA

Manufacturer:
Not known to have been produced

Witnesses:
Unknown
Patent Dates:
Granted: May 19, 1857

Patent Pictures:
USPTO (New site tip)
Google Patents
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