|
US1841611A
|
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Door-operating system
|
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US1684233A
|
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Differential release transmission
|
|
US1614005A
|
|
Method of and apparatus for grinding commutator brushes
|
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US1425499A
|
|
Heat-treating apparatus
|
|
US1367061A
|
|
Work-handling method
|
|
US1360769A
|
|
Centering apparatus for roller-tables
|
|
US1356535A
|
|
Feed-roller apparatus for rolling-mills
|
|
US1370694A
|
|
Method of rolling metal
|
|
US1335063A
|
|
Ejector for rifles
|
|
US1342220A
|
|
Roller-table
|
|
US1114621A
|
|
Roller-table for rolling-mills.
|
|
US1028231A
|
|
Attachment for vehicle-lamps.
|
|
US820933A
|
|
Stroke and power changing device.
|
|
US766047A
|
|
Switch.
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