Home| FAQ	Search:Advanced|Person|Company| Type|Class	Login

Quick search:	Patent number:	Patent Date:

US Patent: 218,707
Improvement in mechanical telephones
Patentees: Charles H. Billings (exact or similar names) - Cincinnati, OH Marcellus J. Maxwell (exact or similar names) - Cincinnati, OH USPTO Classifications: 181/138 Tool Categories: specialty tools : communication apparatus Assignees: Charles H. Billings - Cincinnati, OH Marcellus J. Maxwell - Cincinnati, OH Walter W. Bostwick - Cincinnati, OH Manufacturer: Not known to have been produced Witnesses: Walter W. Bostwick L. M. Hosea	Patent Dates: Applied: May 08, 1879 Granted: Aug. 19, 1879 Patent Pictures: USPTO (New site tip) Google Patents Report data errors or omissions to steward Jeff Joslin Vintage Machinery entry for W. W. Bostwick & Co.

Copyright © 2002-2025 - DATAMP