|
US2048347A
|
|
Primary cell
|
|
US2030177A
|
|
Primary cell
|
|
US2023815A
|
|
Primary cell
|
|
US2048804A
|
|
Primary cell
|
|
US2014856A
|
|
Sealed cell replacement
|
|
US2120618A
|
|
Air-depolarized primary cell
|
|
US2018563A
|
|
Electric cell
|
|
US1941869A
|
|
Depolarizing electrode
|
|
US1834250A
|
|
Copper oxide cell
|
|
US1855917A
|
|
Supporting means for compressed oxide of copper battery electrodes
|
|
US1840119A
|
|
Holding means for battery element supports
|
|
US1830234A
|
|
Battery initial discharge device
|
|
US1831460A
|
|
Primary battery
|
|
US1753154A
|
|
Headless set screw
|
|
US1644389A
|
|
Primary cell and method of making the same
|
|
US1644344A
|
|
Primary cell
|
|
US1725716A
|
|
Primary battery
|
|
US1706895A
|
|
Primary battery
|
|
US1836720A
|
|
Primary battery
|
|
US1599908A
|
|
Wire-winding machine for battery elements
|
