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2694236
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Patent number 2,694,236
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Issue date Nov 16, 1954
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E06 - DOORS, WINDOWS, SHUTTERS, OR ROLLER BLINDS IN GENERAL LADDERS
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2607960
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Patent number 2,607,960
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Issue date Aug 26, 1952
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E06 - DOORS, WINDOWS, SHUTTERS, OR ROLLER BLINDS IN GENERAL LADDERS
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2582467
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Patent number 2,582,467
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Issue date Jan 15, 1952
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E06 - DOORS, WINDOWS, SHUTTERS, OR ROLLER BLINDS IN GENERAL LADDERS
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2286493
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Patent number 2,286,493
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Issue date Jun 16, 1942
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E06 - DOORS, WINDOWS, SHUTTERS, OR ROLLER BLINDS IN GENERAL LADDERS
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2242499
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Patent number 2,242,499
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Issue date May 20, 1941
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E06 - DOORS, WINDOWS, SHUTTERS, OR ROLLER BLINDS IN GENERAL LADDERS
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2023661
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Patent number 2,023,661
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Issue date Dec 10, 1935
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E06 - DOORS, WINDOWS, SHUTTERS, OR ROLLER BLINDS IN GENERAL LADDERS
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2021375
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Patent number 2,021,375
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Issue date Nov 19, 1935
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E06 - DOORS, WINDOWS, SHUTTERS, OR ROLLER BLINDS IN GENERAL LADDERS
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1844817
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Patent number 1,844,817
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Issue date Feb 9, 1932
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E06 - DOORS, WINDOWS, SHUTTERS, OR ROLLER BLINDS IN GENERAL LADDERS
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1795022
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Patent number 1,795,022
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Issue date Mar 3, 1931
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E06 - DOORS, WINDOWS, SHUTTERS, OR ROLLER BLINDS IN GENERAL LADDERS
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1771304
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Patent number 1,771,304
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Issue date Jul 22, 1930
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E06 - DOORS, WINDOWS, SHUTTERS, OR ROLLER BLINDS IN GENERAL LADDERS
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1680221
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Patent number 1,680,221
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Issue date Aug 7, 1928
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E06 - DOORS, WINDOWS, SHUTTERS, OR ROLLER BLINDS IN GENERAL LADDERS
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1668696
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Patent number 1,668,696
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Issue date May 8, 1928
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E06 - DOORS, WINDOWS, SHUTTERS, OR ROLLER BLINDS IN GENERAL LADDERS