[Trade Journal] Publication: Scientific American New York, NY, United States |
LIST OF PATENT CLAIMS Issued from the United States Patent Office. For the week ending October 14, 1851. · · To Z. C. Robbins, of Washington D.C., for improvement in insulators for telegraph wires. I claim my improved insulating supporter for telegraph wires, composed of the supporting and protecting cover, the winged tube, the wire holder, and the insulating segments (two) arranged and combined with each other, substantially in the manner described. · · |
Keywords: | Z. C. Robbins |
Researcher notes: | Found searching http://cdl.library.cornell.edu/moa/ |
Supplemental information: | Patent: 8,419 |
Researcher: | Elton Gish |
Date completed: | January 14, 2006 by: Bob Berry; |