2 Matching Results

Search Results

Sound Reproducing Machine

Description: Patent for a sound reproducing machine. Illustrations included.
Date: October 25, 1904
Creator: Dubinski, Benjamin
Partner: UNT Libraries Government Documents Department

Electric Time Switch

Description: Patent for a electric time-switch. Illustration included.
Date: October 25, 1904
Creator: Dubinski, Benjamin
Partner: UNT Libraries Government Documents Department
Back to Top of Screen