DE889843C
|
|
Calculating machine with a storage unit for transferring values back
|
DE606991C
|
|
Device on calculating machines with counter carriage protruding at one end for transferring tens to the last billing center
|
DE536923C
|
|
Ten switching device for staggered roller calculating machines
|
DE519176C
|
|
Ten switching device for staggered roller calculating machines
|
DE543499C
|
|
Calculating machine with automatically movable counter
|
DE524939C
|
|
Calculating machine with automatically movable counter
|