|
US2050593A
|
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Collapsible stairway
|
|
US1937209A
|
|
Tension controlling device for rolling closures
|
|
US1947070A
|
|
Device for controlling tension of spring rollers
|
|
US1934103A
|
|
Roller screen
|
|
US1925578A
|
|
Rolling light-tight closures
|
|
US1880588A
|
|
Protective and controlling device for rolling window screens
|
|
US1993535A
|
|
Metal frame storm window
|
|
US1921051A
|
|
Access panel latch
|
|
US1833169A
|
|
Tension bar and lock
|
|
US1880589A
|
|
Guide for roll screens
|
|
US1879340A
|
|
Weather stripping for metal sashes
|
|
US1867391A
|
|
Roller screen
|
|
US1766746A
|
|
Spring-roller-controlling device
|
|
US1938729A
|
|
Spring roller
|
|
US1779646A
|
|
Reseating device for roll closures
|
|
US1779636A
|
|
Screen installation
|
|
US1947102A
|
|
Device for installing window screens
|
|
US1878186A
|
|
Venetian blind
|
|
US1766730A
|
|
Drawbar for screens
|
|
US1749199A
|
|
Tension bar and guide for roll screens
|
