Printing Telegraphs. . . . . . . . . .June 10, 1872
131,343 Transmitters and Circuits for Printing
Telegraph. . . . . . . . . . . . . . .June 10, 1872
131,335 Printing Telegraphs. . . . . . . . . .June 15, 1872
131,336 Printing Telegraphs. . . . . . . . . .June 15, 1872
131,338 Printing Telegraphs. . . . . . . . . .June 29, 1872
131,339 Printing Telegraphs. . . . . . . . . .June 29, 1872
131,344 Unison Stops for Printing Telegraphs .June 29, 1872
134,866 Printing and Telegraph Instruments . .Oct. 16, 1872
138,869 Printing Telegraphs. . . . . . . . . .Oct. 16, 1872
142,999 Galvanic Batteries . . . . . . . . . .Oct. 31, 1872
141,772 Automatic or Chemical Telegraphs . . . Nov. 5, 1872
135,531 Circuits for Chemical Telegraphs . . . Nov. 9, 1872
146,812 Telegraph Signal Boxes . . . . . . . .Nov. 26, 1872
141,773 Circuits for Automatic Telegraphs. . .Dec. 12, 1872
141,776 Circuits for Automatic Telegraphs. . .Dec. 12, 1872
150,848 Chemical or Automatic Telegraphs . . .Dec. 12, 1872

1873

139,128 Printing Telegraphs. . . . . . . . . .Jan. 21, 1873
139,129 Printing Telegraphs. . . . . . . . . .Feb. 13, 1873
140,487 Printing Telegraphs. . . . . . . . . .Feb. 13, 1873
140,489 Printing Telegraphs. . . . . . . . . .Feb. 13, 1873
138,870 Printing Telegraphs. . . . . . . . . .March 7, 1873
141,774 Chemical Telegraphs. . . . . . . . . .March 7, 1873
141,775 Perforator for Automatic Telegraphs. .March 7, 1873
141,777 Relay Magnets. . . . . . . . . . . . .March 7, 1873
142,688 Electric Regulators for Transmitting
Instruments . . . . . . . . . . . . . .March 7, 1873
156,843 Duplex Chemical Telegraphs . . . . . .March 7, 1873
147,312 Perforators for Automatic Telegraphy March 24, 1873
147,314 Circuits for Chemical Telegraphs . . March 24, 1873
150,847 Receiving Instruments for Chemical
Telegraphs . . . . . . . . . . . . . March 24, 1873
140,488 Printing Telegraphs. . . . . . . . . April 23, 1873
147,311 Electric Telegraphs. . . . . . . . . April 23, 1873
147,313 Chemical Telegraphs. . . . . . . . . April 23, 1873
147,917 Duplex Telegraphs. . . . . . . . . . April 23, 1873
150,846 Telegraph Relays . . . . . . . . . . April 23, 1873
160,405 Adjustable