Details
a) 69424 -- 1867
IMPROVEMENT IN TELEGRAPH APPARATUS
Elisha Gary, Oberlin, OH
walnut, brass, steel and copper
11in. wide B.3;
b) 166169 -- 1875
IMPROVEMENT IN MAGNETS FOR ELECTRIC TELEGRAPHS
Sir Charles Wheatstone and J.M.A. Stroh, London, England
mahogany, brass, steel and copper
3in. wide B.3;
c) 170407 -- 1875
IMPROVEMENT IN GAS-BURNERS
Albert Marcius Silber, London, England
lacquered-brass
2¾in. high A.3 (3)
IMPROVEMENT IN TELEGRAPH APPARATUS
Elisha Gary, Oberlin, OH
walnut, brass, steel and copper
11in. wide B.3;
b) 166169 -- 1875
IMPROVEMENT IN MAGNETS FOR ELECTRIC TELEGRAPHS
Sir Charles Wheatstone and J.M.A. Stroh, London, England
mahogany, brass, steel and copper
3in. wide B.3;
c) 170407 -- 1875
IMPROVEMENT IN GAS-BURNERS
Albert Marcius Silber, London, England
lacquered-brass
2¾in. high A.3 (3)