|
US2195257A
|
|
Container
|
|
US2084450A
|
|
Means for line justification
|
|
US2077490A
|
|
Means for line justification
|
|
US2055016A
|
|
Machine control system and means for carrying the same into effect
|
|
US1991516A
|
|
Sorting machine
|
|
US1933996A
|
|
Attachment for meters
|
|
US1991515A
|
|
Autographic and calculating device for registering instruments
|
|
US1916232A
|
|
Record analyzing mechanism
|
|
US2047519A
|
|
Tabulating machine
|
|
US2063118A
|
|
Tabulating machine
|
|
US1712901A
|
|
Automatic stop for tabulating machines
|
