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3767910
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Patent number 3,767,910
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Issue date Oct 23, 1973
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G02 - OPTICS
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3330132
-
Patent number 3,330,132
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Issue date Jul 11, 1967
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F21 - LIGHTING
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3048025
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Patent number 3,048,025
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Issue date Aug 7, 1962
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F21 - LIGHTING
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2812652
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Patent number 2,812,652
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Issue date Nov 12, 1957
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F21 - LIGHTING
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2530288
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Patent number 2,530,288
-
Issue date Nov 14, 1950
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F21 - LIGHTING
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2528604
-
Patent number 2,528,604
-
Issue date Nov 7, 1950
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F21 - LIGHTING
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2308738
-
Patent number 2,308,738
-
Issue date Jan 19, 1943
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F21 - LIGHTING
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2237523
-
Patent number 2,237,523
-
Issue date Apr 8, 1941
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F21 - LIGHTING
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2231656
-
Patent number 2,231,656
-
Issue date Feb 11, 1941
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F21 - LIGHTING
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2165900
-
Patent number 2,165,900
-
Issue date Jul 11, 1939
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F21 - LIGHTING
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2041542
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Patent number 2,041,542
-
Issue date May 19, 1936
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F21 - LIGHTING
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2025096
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Patent number 2,025,096
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Issue date Dec 24, 1935
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F21 - LIGHTING
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2017533
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Patent number 2,017,533
-
Issue date Oct 15, 1935
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F21 - LIGHTING
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1890378
-
Patent number 1,890,378
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Issue date Dec 6, 1932
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F21 - LIGHTING
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1879477
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Patent number 1,879,477
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Issue date Sep 27, 1932
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F21 - LIGHTING
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1842904
-
Patent number 1,842,904
-
Issue date Jan 26, 1932
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F21 - LIGHTING
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1822652
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Patent number 1,822,652
-
Issue date Sep 8, 1931
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F21 - LIGHTING
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1696959
-
Patent number 1,696,959
-
Issue date Jan 1, 1929
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F21 - LIGHTING
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1570133
-
Patent number 1,570,133
-
Issue date Jan 19, 1926
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F21 - LIGHTING
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1562637
-
Patent number 1,562,637
-
Issue date Nov 24, 1925
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F21 - LIGHTING
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1558770
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Patent number 1,558,770
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Issue date Oct 27, 1925
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F21 - LIGHTING