|
US2180839A
|
|
Primary cell
|
|
US2010608A
|
|
Gas electrode
|
|
US1807331A
|
|
Battery charging unit
|
|
US1269914A
|
|
Process of making conducting hydrated black manganese dioxid.
|
|
US1254114A
|
|
Portable electric light.
|
|
US1241071A
|
|
Portable electric light.
|
|
US1269916A
|
|
Polyacid-of-manganese-dioxid depolarizer.
|
|
US1269915A
|
|
Process of making manganese dioxid.
|
|
US1255283A
|
|
Electric battery.
|
|
US1236657A
|
|
Circuit-controller for portable electric lights.
|
|
US1241077A
|
|
Portable electric light.
|
|
US1238849A
|
|
Lamp-socket.
|
|
US1238850A
|
|
Portable electric light.
|
|
US1292117A
|
|
Apparatus for pasting storage-battery grids.
|
|
US1205392A
|
|
Electric battery.
|
|
US1202161A
|
|
Compression-rheostat.
|
|
US1236693A
|
|
Depolarizing agent.
|
|
US1232904A
|
|
Manganous manganate and permanganate depolarizing agent.
|
|
US1228359A
|
|
Non-hydrated moisture-containing manganese depolarizing compound.
|
|
US1232873A
|
|
Higher-oxid-of-manganese depolarizer.
|
